Thanks for the interest. You could do a lot worse. Not that this is the only way to get a good house, but it's a very inexpensive one.
This evening we had a tornado watch. Some mid-westerners are interested in a house that won't blow away, as much as being so easy to heat and cool. In the west, it's fire danger that makes some interested in a house that won't burn.
Dirt: good stuff, and cheap. I grow veggies on my roof.