BTW, there seem to be quite a number of Millenials who've decided to live off the grid, stealth camping in B-vans. There are a lot of them blogging their lifestyles now too.
I've traveled extensively for the past forty years, much of that with trailers and in motorhomes. When I was in my early 30s (in 1987) I lived in a 23' Airstream travel trailer for a year. It was a liberating experience... definitely a different lifestyle than living in a three bedroom ranch house in the 'burbs. You define "wealth" very differently when you live in a space like that, and you choose the material goods you live with much more carefully and for different reasons. it's kind of like full-time backpacking... you carry what you need, but not a pound more.
And you learn how to be frugal with resources... water being the most important. My B-van does carry water, but only about 12 gallons. Just as important as the fresh water are your waste tanks. You have to find appropriate places to dump them, and they can fill up quickly if you're not frugal with your fresh water use.
My point is that there are a LOT of considerations for trying to make a travelling darkroom/studio setup... and most of them have to do with a lack of working space, and fresh and waste water issues. But i'll tell you that there's no better or more comfortable way to travel and see the world!