• Laptop
  
  
• Logitech MX Rechargeable Bluetooth Mouse
  
• Communication Cables (USB Serial Converter, DB9 Gender Changers, AB Cables, Ethernet of various sizes, RJ45 Coupler, etc.)
  
• Wiha SlimLine Kit
  
• Fluke 789 Processmeter
  
• Test lead Kit
  
• Voltage Sniffer
  
• 5-Port Switch
  
• Wire Stripers
  
• Wiha Dikes
  
• Needle Nose
  
• Fold-up Allen Wrench
  
• Klein Tool Bag
  
• Swiss Army Backback
  
• Electrical Tape, Fuses for Field Install and Multimeter Spares, Surge Protector, USB Drives with Automation Software, Fold-up TV Dinner Table, Fold-up Chair with Cushion, Notebook, Business Cards, Pens, Sharpies, Phone, Hardhat w/ Headlamp, Safety Glasses, Electrically Insulated Steel Toed Boots.
  
  
  
  This is setup is mainly for project startups and it would probably change if I was in more of a service engineer role.

Allen keyed then.

https://www.amazon.com/Stanley-STHT71839-Folding-Metric-2-Pack/dp/B00D4C18CU/ref=sr_1_5?s=hi&ie=UTF8&qid=1505792228&sr=1-5&keywords=allen+key+set

I have an allen wrench set like this that has everything in metric and standard that you would ever need for a guitar setup. The best part is its easy to find when you need it and you dont lose the smaller keys.

1: You seem smart enough to realize what you need to do to get to where you want to be. Many aren't that lucky, or that smart.

2: Don't focus on the time spent at work, focus (and treasure) the off hours that you can spend doign what you love and with those you love.

3: Set a picture of your family nearby, or on your phone. Look at them when things get to be too much. They need you, and if your biggest sacrifice for them is being bored, you're lucky. Think about them, and how much you love them, and how much they love you. And on your days off, spend as much time with them as you can. A year and a half is nothing, you can do this.

Linky.

Buildtak spatula: https://www.amazon.com/gp/aw/d/B017XGEDOM/ref=mp_s_a_1_1?ie=UTF8&qid=1521340627&sr=8-1&pi=AC_SX236_SY340_QL65&keywords=buildtak+spatula

Needle nose pliers: you don’t really need quality here, I just use a set from a multitool

Sandpaper: just go to a Home Depot or similar

Hex set: https://www.amazon.com/gp/aw/d/B00D4C18CU/ref=mp_s_a_1_6?ie=UTF8&qid=1521340573&sr=8-6&pi=AC_SX236_SY340_QL65&keywords=hex+keys

Since you're lacking a tool bag, these would be useful for you.

http://www.amazon.com/dp/B00D4C18CU

You'll get the bolts loose to raise the tank.

Tank prop, I can't seem to find one, since mine didn't come with one either. I just use a dead blow hammer and prop it up.

For what it's worth, there actually aren't that many different sizes. Every key you own is probably identical to one of these... https://www.amazon.com/Stanley-STHT71839-Folding-Metric-2-Pack/dp/B00D4C18CU/ref=sr_1_2?ie=UTF8&qid=1541438452&sr=8-2&keywords=stanley+allen+wrench

So if your stash ever overwhelms you, don't ever feel like you absolutely must keep them all.