Not interested in pop-ups
Has a rigid mount camper so won't fit my off-road needs, but definitely a nice build.
I am looking for a long term build that could last 30 years.
I forgot to mention it's just me and my German Shepherd. Don't need a large bed, extra beds etc. Can get by with a twin sized bed.
I'm thinking more like 100 gal's of fresh water and 80 gal of diesel.
Not worried about tree branches? I know, mine isn't pop-up either, but if you are *really* concerned about going everywhere, and want something you can stand in, it's essential.
Do you really need so much water and fuel? Everything can escalate into silly excess if you get carried away. I know for a fact that two people and a dog can be comfortable long term in a '84 Toyota 2wd truck with a homebuilt camper on the back just tall enough to sit up straight. Did all sorts of exploring in that truck for 13 years, from southern Canada to southern Baja. You'd probably be shocked at the places I forced that truck to take us! Carried 10gal of body and dish washing water, plus drinking water. That was enough for a week, and then we'd usually find a place to get a hot shower when we went to town. After bashing in the fuel tank on a rock, it only held about 12gal which was plenty (~300mi range). The only place I wondered about running out was Baja just because the stations didn't always have it, but I never had a problem. I know a hot shower every day is nice, but neither me nor the women I traveled with thought it was necessary. I actually prefer simplicity. Stuff that seems like a "need" in normal life kinda fades away, at least for me. Plus if you are camping near lakes or streams, you've got a water source and you don't need to pack it in.
You might be surprised how little offroad capability you really need as well. I was in a 2wd with an open differential. Did I ever get stuck? Sure, it wasn't an unusual occurrence. But my only recovery equipment was a tire pump. That usually was all it took. A couple times it took me hours of digging and gathering rock and sticks, but I always got out on my own. I avoided mud and snow if possible (easy to do in the west), but drove in sand all the time. And up and down mountains and all sorts of gnarly trails. The bottom of my truck was covered in dents, but the only time it left me stranded was when the fuel pump died.
I guess my point is, you might want to consider your priorities. The best vehicle for "going anywhere" is not a 15klb+ vehicle, with a camper you can stand in. Any 4wd truck (even the 1/2 tons) would make great long term living and exploring rigs for North America, if you do it right.
Oh, and diesels. The only way I'd buy a modern diesel is if there was a good emissions delete kit, and I lived in a state where I wouldn't get inspected.
