Sounds like a great plan! I (singular) used to be a tent camper, both with a backpack and a small truck. Now we (plural
) enjoy our Scamp
, with its easy set-up, security in bad weather, and comfortable beds.
AC is the hardest part of your requirements, especially when combined with the 8' height limitation.
The most effective AC is on the roof, which is where Scamp now puts it (and has for quite a few years). For sure that's going to put you over 8' on post-fire Scamps (2007+ grew a few inches following a factory fire and new molds). I'm not sure about pre-fire Scamps.
A window-type AC unit can be installed in a cabinet and vented through the shell, and that would keep the height under 8'. It's not as effective as roof AC, and it can be tricky to get right- with sufficient support, ventilation, and drainage for condensate.
At one time Scamp installed window AC in the closet next to the door. If you find an older one that way, it could either be a factory installation or an owner modification (in which case it deserves close inspection).
Casita does a factory installation of a window unit through the front. They are under 8' tall.
Most of the other vintage units were sold without AC, so if it has it, it was added by a previous owner. Again, it deserves a close look.
Hope you can find someone in Denver to let you have a look. I know we have some members from that area.
Best wishes in your "egg hunt"!