Reddit mentions of StudioFX SANDBAG Sand Bag SADDLEBAG Design Weight Bags for Photo Video Studio Stand by Kaezi Photography (Yellow - 4 Pack)

You might look into getting some sandbags as well. I work in video, and I've bumped into stands with expensive lights on them enough times to know the value of a low center of gravity.

http://www.amazon.com/gp/product/B00O4H6AI6

(Make sure to read reviews and avoid cheap, leaky sandbags! I just linked the first ones I saw pop up on Amazon.)

I'm going to recommend that you look into Paul C. Buff AlienBees.  They offer a lot of value and aren't that expensive ($225-$360, depending on the power output), are built like tanks, last for years (my oldest is around 6-7 years old and still going strong), and have tons of inexpensive accessories available for them.  I'd pair it with one of their softboxes - probably an octabox.  For the specific model, I'd suggest a B800.  It has a decent amount of power vs. daylight, but can be reduced enough to not overpower too much in a studio environment.

There are cheaper options than AlienBees out there, but Paul C. Buff has an excellent reputation for quality, reliability, and customer service that you just aren't going to find with anyone manufacturing a cheaper strobe... and AlienBees are pretty cheap for what you get anyway.  :-)

For light stands, I'd suggest either Westcott or Avenger.  Westcott's 13-foot heavy-duty light stand will get the job done for around $60, though Avenger's C-stand is much more stable for around $200 ($250 if you want the removable base, which is nice for collapsing during transport). Avenger also makes a solid boom for another $120.  You can get away with just a single light stand for now, however.  Just make sure you sandbag it.  (I recommend pebbles rather than stand, and fill up a gallon-size ziplock bag rather than dumping them directly into the sandbag to avoid mess.)

I would change your "camera stand" to simply a tripod stand. Camera tripods are very different from the type of stand you link to, which are more typically used for lighting or green screen placement. No photographer would use a lightweight flexible tripod like that for camera use- and tripods typically don't reach 6-7 feet in height. And, you might also mention to use a sandbag to weigh down the stands for greater stability on the tripod. These work well and call attention themselves nicely to keep others from missing the black tripod legs.

https://www.amazon.com/StudioFX-SANDBAG-SADDLEBAG-DESIGN-Photography/dp/B00O4H6AI6/ref=sr_1_3?keywords=tripod+sandbag&qid=1557117727&s=gateway&sr=8-3

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And, in addition to the tripods, they should get a ball and socket tripod head to attach the tripod to the base station. They typically don't come equipped with them.

I've used these for the past couple years, and most of them are holding up (some handles are breaking, mostly from being thrown around). They're a 4 pack for relatively cheap. Sand still needs to be purchased. To prevent the sand from taking on water weight (if used outdoors), to prevent mold, to prevent the sandbags turning into dust bags, and to give one more layer of protection, sand should be poured into gallon-size ziploc bags before putting into the sandbag.