Just two questions:
1. Can you live on top of each other?
2. Can you become a "minimalist" and leave most of that stuff you pack in the FW behind?
If yes to both, then you just may be a candidate.
My wife used to laugh at TC when I pointed one out as we traveled with the kids and FW. Decided I wanted one because she and kids didn't want to go with me all the time and I felt ridiculous hauling the FW just for one person. Plus I grew up camping in a TC and remembered the freedom and quick trips. After a couple trips, she has fallen in love with the TC style of traveling and doesn't really miss all of the things we use to carry.
We have decide we want to go a hair bigger than the 815, mainly because of the shower size (smaller than most) and an oven (love coffee cake on cold mornings), but otherwise, we have plenty of space to carry all we need. Except for a laptop, couple of books, we don't carry any knickknacks (no tv or radio), so the small space works well for us.