rruff
Explorer
Well... That really depends of how intense the build is.. I would prefer a base platform (probably awd) to work from.
Not that long ago I was looking at vans too, and 4wd or AWD didn't make sense. Based on my 13 years of living in and traveling all over the west in my 2wd PU, I think you'd be fine with 2wd... especially if you do the mods I mentioned earlier. I was alone, no phone, nobody knew where I was. My recovery equipment was a tire pump and a rope. If I got stuck, I always got unstuck on my own. No problem finding beautiful remote locations where I wouldn't see another human. Based on what you said you wanted it for I think you'll be fine. Mechanical breakdowns are more likely to leave you stranded, and 4wd isn't going to help with that.