By CA regulations I have to provide a permanent heat source. 

Get fat and grow a beard!

Most vacations aren't that long and permanent residences aren't that short.

Lastly, every plaintiff attorney I know LOVES large fat insurance policies and HATES going after hard assets like real estate or an owner's bank account.

The owner got approval for the fields in 1989 with the stipulation that he make that portion of the land a permanent part of this property (it appears to be 2 family members who lived next door to each other, so I think they all shrugged and blew that part off).

Wordpress is exactly what I would and have used for more permanent and design demanding projects.In my experience, for the quick setup, ease of use, and super flexible terms, SQUARESPACE has been the best solution for listings, especially if you're juggling 6-7 at a time and don't have the manpower to put towards 6-7 wordpress sites.

"I mean, permanently lose them, and to not find other income after this.

Mobile homes NOT on a permanent foundation are PERSONAL PROPERTY.

LOCs are not designed for permanent lending solutions.  

If there is something giving permanent access to the driveway, my understanding is you would be able to get a mortgage, no problem.