There are two routes that people generally follow. But spend $10 and get a copy of Dalby's book:
Guide to the Alaska HighwayThere is also a Milepost book:
Milepost 2014And there is an Alaska-Canadian forum here and they'll be able to answer questions much better than I can. We want to go up there but it's something like 7000 miles from where we live to Fairbanks.
I see you live in DeLand, so the distance is the same for you. There are all sorts of complications that arise from crossing the border--pets for example have to have a current health certificate. It's better to get an authoritative book that will cover most items of interest