Have a great trip! We took the hiway to Northway and the anchorage. There was no fuel in Northway, so it's either Tok, or tanker enough to get you to Galenta after clearing customs. Tok is 15 min north of Northway.
If you hit Fairbanks first it's an easy run in the valley from Tok.
From Fairbanks, hit the Denali highway to Talketna and then Anchorage. A trip to Homer across the Kenai is worth it.
Anchorage back to Tok and then Whitehorse is a good day. Some passes between Anchorage and Tok. But FSS have good cameras you can view on the web before you go.
The traffic into Merrill Field, class C, would put most Class B operations to shame. Read up part 93 and be ready for it.