What do you want/need? Do you like simplicity? Didn't you say you were a backpacker?
You might be surprised how little you actually need. I was. But you have to know yourself! If you like being in nature, and avoid inclement weather seasons, you might be happy without all the typical amenities. Even if price is no object, simple, small, and light have real benefits. Poop outside and use one of those folding seats with a bag for emergencies. Piss in a bottle at night. Use a sunshower or heat water on a portable stove. Wash dishes outside. Cook outside. Make it so you can get to and pull things out the back of your rig easily. Take out the rear seat if it's a pickup and use that for storage also. Use plastic bins and simple wood tables/structure for storage. Get some good coats, pants, sleeping bags, and blankets so you'll be comfortable on cold nights. A little propane latern can warm a decently insulated box 20F or more. Something for shade in the desert... I use the camper itself and the rear hatch serves as an awning. Drink wine or hard liquor (if you drink), eat food that doesn't require refrigeration for at least a week (there is a lot), treat yourself to a nice meal (or 3) in town when you go. Use a portable solar panel with a long cord and one of those decent power stations with LiFePo4 batteries... for led lights, phone, and a laptop.
If you want a van, a newer (with more gears) E series 2wd is a good bet IMO. Those 4wd conversions are overpriced. Add a regear and locker, bigger tires, small lift. You'll be able to go anywhere a sensible person should in their "house". Ground clearance is the main thing. If you want standup height, a topper is easy to build. Or get a good pickup and build or buy a box for the back. I built that setup in the pic on post #71 in 2 weeks (solo) in a friend's garage with minimal tools. Yes, I can work fast when I'm motivated!
I absolutely love waking up to the sunrise on a cold calm morning... the sun warming my body... the critters coming alive... no other humans for miles. Make some coffee and wander around, checking out the neighborhood.