Wow- Now I know Im a woos, I wouldn't even consider let alone attempt.
Our jacks are 10 1/2' apart, feet are Ø5 1/2". If I were able to get camper up, jacks vertical, feet would be 1/2" off at front edge, Which wouldn't happen, something would yield.
The entire camper would have to be raised approx. 10 1/2" at front jacks just to get level before lifting. Add another 2" to raise above rear of bed that's almost 48"...(from the 36" truck bed height). Fairly sure extended height would be beyond our jacks travel. But if it cleared, setting at that height at that angle, doubt I could get the truck out from under fast enough. Getting back on truck seems might be even more entertaining.
Just to visualize