We too don't boondock, but with six 6-volt batteries, a 3000 W inverter and a 10Kw diesel generator...I don't think it would be a problem.
We love our 3-door 22cf Maytag with in-door ice and water dispenser. It will hold almost as much as our home 25cf Maytag Side-by-Side.
Our previous coach had the 4-door Nevercold and we always had problems with it and several recalls had to be done. PITA, and with very little inside space, it made staying in it for five months straight a real problem.