Lorraine, you might want to check out
RV Sue and Her Canine Crew blog. A retired teacher, she opted for a Casita travel trailer instead of larger unit and prefers to boondock on BLM sites. It's ideal for her and she didn't have to invest a lot of money to follow her dream. She has one of the best blogs around and will answer your questions. Really nice lady.
Unless you are really sold on the Thor, you might want to read her blog before making a final decision. Can't hurt and might save you a nice little chunk of change.
Cat Lady