I really like that Idaho suggestion, and it's one I've considered before. I know Inivuk is kind of boring, but I want to do a lot longer legged journey and 1200-1500 miles have already been done by me numerous times, so it seemed like a good direction. I'm not that locked into Inivuk, so maybe Idaho with a round trip back through Washington and Oregon.
For me it's gotta be the Husaberg, because I've got nothing else to ride. I'm sure it will be fine. I'll pack enough spares that without a catastrophic engine failure I should be able to keep it going, and If not, I'll always think it should have worked that way.
BTW, thanks for the advice on the other forums to post in.