I built a truck up for a trip up the alcan in 1969 when I returned from Viet Nam.....Made it as far as Humboldt County, a degree, a wife and a business....never made it to Alaska...it's on my bucket list for sure and have spoken to many about the trip.
Consider a partial alcan and a partial ferry trip from Bellingham or Seattle...alot easier on your truck and you get different perspectives as well. (it's not a smooth ride as you might expect)
A trip done by a WTW member was posted a bit ago...very well done...but alas, I don't have the link
you're definitely in the right camper