Regarding the design of the "camper":
Maybe ditch the air cylinders for electric screw jacks? Timing all four could be a pain, though I imagine you have the same problem with air. Maybe a cable/chain system with central cylinder/s, similar to the hobbyist, garage car lifts sold all over?
I dig the security afforded by dropping a solid housing down over the entire get-up when not at camp. Similar to a design someone did on a 70 series or maybe a LandRover if I remember right. I'll dig up the reference and post it.
Well done!
By the way, drooling over that camp site shot with the fall colors coming in. Out here in CA its sand, dirt, or ever-green. (Not complaining, "grass is always greener" and all.)