I am hope you have already been to the aviation museum at AlaskaLand, or whatever they call it now, there in Fairbanks. I hope you had a chance to see the Alaska Aviation Museum in Anchorage.
I took the inside passage from Juneau to Prince Rupert, BC. If you are on the car ferry, word of warning. The food is bad... REALLY BAD. I had to sneak down to my truck and get my survival food out. Otherwise it was a great trip. I spent most of the daylight travel up top looking at scenery, some of the time in the bar, and the rest of the time sleeping.
I am guessing you will be driving from Fairbanks to Haines Junction, Yukon, Canada then turning right on Hwy 3 to Haines, AK. Be sure to pass through the border crossing from Canada into the US before midnight. Or you might have to sleep in your vehicle like I did. The Canadians were very courteous and woke me the next morning in time to drive into Haines to catch the first ferry. Plan for extra travel time for winter conditions.
After reaching Prince Rupert I drove down to Spokane, then across Idaho, Montana, Wyoming, Colorado, New Mexico and into south east Texas. I spent 42 hours on the ferry and 6 days driving. My biggest regret was that I traveled alone.
You probably already know, for the drive across Alaska and Canada take extra gas, food and water. And I can't say this enough, plan for winter conditions along the road.
Sounds like a fun trip, stop and enjoy the sights on Uncle Sams nickel.!!!!