I am in the early planning stages as well and trying to decide on 4x2 or 4x4, will want to get off beaten path, and fs roads to BLM land camping and so on, not so much or at all hardcore 4 wheeling unless I take a wrong turn!
I'm not big on propane to heat and don't want to cook inside unless to microwave or heat water for coffee. So a diesel furnace appeals. I don't like having to deal with DEF so I was thinking of going gas with a transit and ecoboost engine, but no factory 4x4 yet, but conversions are done for about 13k I hear.
I'm not ruling out diesel sprinter by any means, anyway sorry to ramble, this will be my retirement travel rig, penthouse top for sure, to travel all over 48 and alaska, Boondocking, and campgrounds as well. Thoughts, and comments welcomed, that's how you learn right?