Some thoughts:
- the guys that do it for a living haul 40' (and frequent doubles) trailers from Seattle / Montana year round in a matter of days. Don't even attempt to emulate them with your 44' 5th wheel. It will be a slow and steady trip from Banff or wherever.
- Pull-off spots are likely going to be available without problem. Identified CG spots for a 44' trailer, not so much. As Grit suggested, plan on basing in an area for several days and using your truck as the way to get out and see the sights.
- Alaska is expensive to enjoy if you want to do anything other than drive and hike. Incredible fishing, great sights, spectacular flightseeing, but it all takes $$.
- With few exceptions, the RV-tourist stuff is locked up tight by mid-September. You should plan on being well on your way back by then.
- You've hit the high spots for visiting. If you can handle it, meaning dealing with the bumps and the necessarily slow going, considering driving the Denali Highway from Paxson to Cantwell. That stretch, IMNSHO, is in the running for the most scenic road drive in AK.
- I probably am misinterpreting, but I wouldn't plan on going from Banff to Valdez to make Valdez your starting point. Banff - (whitehorse, etc) - Tok- Delta - Fairbanks - Cantwell - Paxson-Glenallen-Anchorage- Seward-Homer-Anchorage-Talkeetna-Wasilla-Palmer-Glenallen-valdez-Tok-Whitehorse etc is sort of how I'd do it if I had 3 months...some backtracking but that's almost a given if you try to see a lot of the road system.
- Expect pretty high fuel prices......
CRL
My RV is a 1946 PA-12
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