Greetings & Welcome!
The one thing I learned quickly while traveling Europe was to get something that would be easily repaired anywhere I was traveling too.
Here in the USA, you can often actually get a factory camper van or motorhome for much cheaper than you can build your own. People who build their own seem to never be satisfied with them, and quickly sell them. Conversely, most full timers with factory built rigs love them and keep them.
I’ve gone both ways, and been happy with all but one. I got conned into building out a windowless cargo van, and it was both miserable and expensive. I wouldn’t make a good cave dweller, for me a view in all directions is much safer & much more enjoyable.
“Everything should be made as simple as possible." ~ Einstein