Boondocking might be fine for a night or two to spread out overall trip expenses, but that's about all my and my DW would care to do. This is especially true in the desert Southwest regions like Moab, UT home to Arches NP and Canyonlands NP. The dust and winds blowing aren't our cup of tea. When we were in that area last May we were fortunate we were staying at an FHU campground, the temp was in the mid-80s but with 40 + mph winds we were stuck inside the rig before and after doing the sightseeing thing around the area and parks.
Whatever rig you decide on make sure you find out the size of the holding tanks, and water tank, how many house batteries it has, and the condition of the generator and size. You may want to investigate the various portable solar options available too, sometimes called "suitcase" solar.