Firebuild - glad you're here!
If you want a larger bus for a moving van and rudimentary RV for the trip, and can wait a couple of months, I'll have one available in Idaho (
link). I could pick you up at the airport in Spokane. No idea what we'll be asking for it, but probably will start the price at $4,000 and see where the offers go. It has just over 25 feet clear behind the driver's seat.
It will have a recent oil change, new filters, a new serpentine belt and tensioner, all but a few of the seats removed and a co-pilot chair added, and will be painted (probably Ford Blue) - ready to load and convert at the other end.

-Tim