I have a SS1500 and I'd say 80" is about right. No air for me either but I do have a wet bath with a dome so mine is about 88" but I give it 90. I have an 7 1/2 foot OHD so what I did was I bought a second hand single axle boat trailer from Craigslist with small wheels (12") and I set the camper on the trailer and put it in the garage using my quad (and my wife as guidance).
I use the camper tie down turnbuckles to attach the camper to the trailer too.
Works like a charm. In fact, I leave it on the trailer all winter and just lower the jacks to where they touch the floor. Reico-Titan sells a dolly but the trailer was hundreds cheaper.
On the trailer I can move the camper anywhere I want even in gravel or on grass.
You cannot retract the jacks to the point where the camper is on the ground, they won't retract that far. Besides I cannot, I have my black and grey tank drains underneath the camper at the drivers side rear corner.
I'm all about keeping it inside out of the elements, especially winter weather. It should stay as new for a long time that way.