I would suggest you plan carefully and select an aircraft that is in PERFECT nic if you are considering going up to Alaska and across the middle of Canada. I have been there flying and you won't need me to tell you that it is very remote, wild country and for SEP I would be quite cautious about the routes and places I would be flying to. Coast to coast US would be feasible, but Alaska and Canada are different kettles of fish.
I assume you have a bit of experience to be considering such a trip, but think carefully about going to Alaska if you have never flown those stretches before and know the local sort of things to watch out for.
If I were on my own without a family, I would jump at the chance to do that, but otherwise I would think carefully.
RR