On the camper front, I've read of a number of natural builders who would camp out in tents or a vehicle while they build. 'Roughing it.' I'm sure a decent camper would be more comfortable, or a tent better than a simple weekend camping one.
An option to consider is canvas tents (pyramid or wall style). They can often have wood stoves installed to help make it more cozy and livable in the winter, and they're a good balance between mobile and semi-permanent to make it easy to overcome the initial hurdles of site selection, permits, access. Consider the
Civilian_Conservation_Corps and how they setup some of their 100+ person camps using canvas tents with wood stoves in them while they would work in substantial projects in sometimes very remote areas. One key thing they had that you won't: a lot of hands on deck, government support, and often a specific tent and group of specialists for food, medicine, tools, transportation. You'd need a different camp/tent setup than that of a CCC worker but the canvas tent may still do well for you.