Xgunfighter
AK is a real treat.
You've already got good advice and the best one was the Milepost book. You'll have all the CG you need, for free and for lots of $$$.
If you're hauling heavy, you might want to stick to paved roads which isn't hard anymore. Some paved roads are heaved esp at AK border for about 30 odd miles both sides and you have to go slow.
With the time you're giving yourself Tok, AK is place to make decisons. You'll be driving back through Tok also.
For Halibut, go west down to the Kenai Penninsula and there are great trips to Valdez, Anchorage and esp Homer for your "barndoors". You'll want to spend a few days in Homer. The roads to Valdez and Homer are paved and super scenic. From Anchorage you could make Denali a side trip... book Denali bus tour in advance. Then on the way down to Homer you can do Whittier / Seaward for a glacier boat trip. Valdez has a "small hill" at Thompson Pass... I think its like 8% grade for 3 miles!!!
Now at Tok you could have gone straight North to Fairbanks and wind round down through Denali on way to Anchorage, but that will use up precious time imo.
On your way back at Tok, if you have time, go East and take the top of the world highway through to Dawson City and back down through the Yukon - a worthwhile trip. You'll want a few days in Dawson... but you can decide on your way back if you have time. The top of the world highway is gravel... no trees either... huge forestfire a few years back. Go slow, no problems!
If you don't have time for Dawson, you might consider Haines when passing through Haines Jct. It's a very scenic trip over the Chilkat Pass Summit...
Check my web site here for more info. Hit the "blue" words for some of the side trips we took.
North to Alaska
Have a great trip.