Hi
We will be back in Norther Spain with our caravan in August, on a project similar to what you are looking to create.
There are quite a few projects in the area, most private but all forming a small community of off-grid and permie follk.
We have not bought ourselves so I cant comment on that side of things but maybe knowing there are many others who share dreams of a similar nature (as we do).
Good luck in your search and maybe one day we may meet.
