Reddit mentions of Ubiquiti UniFi Cloud Key Gen2 Plus (UCK-G2-PLUS), Single

I had Wyze cameras and had 3D printed outdoor housings but the quality wasn't great at night after our last run in.

Went Ubiquiti. Three G3-FLEX cameras (four tonight) and ran some CAT6 with a powerline adapter for the camera you see above. I'm runing the UniFi Video software on an old Mac mini with a 5TB USB HD but I'm strongly considering one of their CloudKey Gen 2+ to dedicate specific hardware for the cameras/network.

The interface is fantastic, the camera quality is fantastic (they also offer a 4K camera though $$$), and security hardened. I like the idea of them being wired to take that busy constant video traffic off of wifi.

Edit: added links

Okay here's some background. Cameras come in a few types.

Old school cameras are analog. Each camera gets a coax analog video line, and a DC power cable. In the olden days those coax cameras recorded onto analog tape. In the slightly more modern olden days, a DVR (Digital Video Recorder) device would have many analog inputs and would record the video to a hard drive.
You DON'T want that.

Today, we use IP cameras. IP is Internet Protocol- means the cameras are fed one Ethernet line, generally PoE (Power over Ethernet). That means one Cat5/Cat5e/Cat6 cable can feed the camera both power and data connection.

There are also now WiFi based cameras. Those cameras are much like IP cameras, in that they use Internet Protocol, but they use WiFi instead of hardwired Ethernet. That means they must be plugged into a 120v power outlet. The WiFi cameras I'm talking about use a NVR on the network, just like normal IP cameras.

Finally, and in a totally separate category, are cloud-based cameras. These are proprietary products like Ring, Nest, Arlo, etc. While they are WiFi IP cameras, they ONLY communicate with their own proprietary cloud service. So you could have a ton of hard drives at your house, you can't use any of them; you have to pay for the camera manufacturer's cloud storage service. I suggest NOT getting this sort of camera, mainly because you have to pay for the storage forever, and also because it is constantly uploading (mostly-useless) video over your Internet connection.

There are a lot of popular 'surveillance in a box' type products. What those usually have is an all-in-one NVR (Network Video Recorder) that has several powered Ethernet ports for cameras, and a hard drive, as well as 4-8 IP cameras. Hikvision makes a LOT of these, and they're not terrible, but IMHO you can do better especially as Hikvision security isn't the best.

Ubiquiti is another company that makes IP cameras. With Ubiquiti hardware though, you do it on a piece by piece basis- you get a PoE Ethernet Switch to plug the cameras into, and the cameras themselves, and the Cloud Key + Gen2 is your NVR (it plugs into one of the switch ports).
This diagram shows what a complete Ubiquiti UniFi network would look like... it's more complex than you need because you don't need the router (UniFi Security Gateway), or the WAP (UniFi AP). You already have a router and WiFi. So you just need the cameras, a PoE switch, and the NVR.

While all that sounds complex, it really isn't. Here's what I'd do:

$190 Cloud Key Gen2+
$107 UniFi Switch 8-port 60W PoE
$381 UVC-G3-Bullet-3 Camera 3-Pack

Result is for $678 you have a nice very good quality surveillance system. You can access it remotely from your cell phone. It will record for quite some time with no monthly fees ever.
To set it up- take the 8 port switch. Plug the Cloud Key Gen2+ and the 3 cameras into the 4 PoE ports. Plug any of the non-PoE ports into your existing router. Then fire up the UniFi app on your phone and configure it.

Invest in your company, invest in your infrastructure.

I'm going to demur from your provided list, and instead offer an alternative solution. Just hear me out before you look for sticker shock (all prices in USD).

Ubiquiti 24-port Gigabit Switch with PoE ($379)

Ubiquiti Unifi Security Gateway ($129)

Ubiquiti Unifi Cloud Key Gen2 ($195)

Ubiquiti Unfi UAP-AC-PRO-E 2-pack ($290)

Total cost: $993

Why am I suggesting you spend almost three times the average cost of one of those small-business routers? A few reasons.

First is performance. Ubiquiti makes 'prosumer' / Enterprise level equipment. The Access Points (APs, last entry) are each rated for 200+ simultaneous connections. When deployed right, you'll probably connect to one consistently; the other will be used by the network to identify which WiFi channels are least congested and migrate you and your clients to those less congested frequencies. In the end, that's your real problem: congestion. With 62 competing access points, it can be hard for your devices to 'hear' your router. So you need a product with some real oomph to get your AP heard. Ubiquiti can do that in spades.

The second is professionalism. What looks better to a client? A plastic black box on a desk somewhere, or an access point hung from the ceiling, like you'd find in a fortune 500 company's headquarters? ubiquit's stuff is slick, sleek, and professional.

So what are you getting for your money?

The switch (first entry) is used to provide power to the Access Points (PoE: Power over Ethernet), and since you have some extra ports there, you can also run a connection to a server, or hardwired connection to laptops, or whatever you might come up with.

The security gateway is the real 'router' in this set up, but it has no wifi capability built in; this is why you need the Access Points. The way it works, you would take your ISP's modem, set it to bridge mode, and then connect the modem to the security gateway, and the security gateway to the switch.

The cloud key is the brains of the network. It will host the controller software and allow you to set up the wifi. While this software can in theory be run on any device, this particular cloud key also contains a hard drive - very useful if you'd like to install security cameras in the office (I'm sure your insurance company would be VERY grateful, if you dont have these already). As a side note, Ubiquiti does make PoE-powered security cameras.

This setup will 100% guarantee that your wifi is the dominant 'voice' in your office. You won't have dropouts, you won't have connection issues, and this setup is very expandable - 1 port for the gateway, 1 port for the cloud key, 2 for the APs, (ideally) 5 for wired connections for you and your coworkers - that still leaves 13 connections on the switch, which means you can still expand this if you hire more employees. If you find you need a backup ISP, there's a grade higher security gateway that can handle redundant ISP connections. If you need to cover more area with WiFi, you can add another access point.

Make the setup look really professional and install everything into a patch panel cabinet like this one

Hire an electrician who specializes in running ethernet cable, and have them mount the APs in your ceiling (super easy if you have a drop ceiling. If not, its more difficult, but not by any means impossible). While they're there, have them run at least one ethernet line to everyone's desk.

edit: and less you think I'm blowing smoke up your ass, I use a frighteningly similar setup in my own home. Yes, it's overkill, no I don't care. It's the most stable WiFi I've had in a house in my life.

Here's some links to the items I had mentioned,

Cloud Key Gen2 Plus

5TB USB Hard Drive (How to shuck it)

Cameras:

G3 Flex (Crosstalk's review)

G3 Micro (If wireless is required) (Crosstalk's review)

Other useful videos (Crosstalk Solutions does a lot of good videos about Unifi products):

Information about the hard drive upgrade

Information about unifi protect

Unifi video NVR Build