Here's our
2013 Alaska Trip blog which may give you some additional ideas. Be sure to click on the right side Blog Archive links.
We were able to copy a caravan tour itinerary from some folks we met and we used that information to visit some of the same areas. Only very sketchy trip information will be found on the tour websites.
Alaska Changed Us: After several years of discussion we decided that we would go on this "Once in a lifetime trip and cross it off of the bucket list." Instead in Alaska we realized that we were on an adventure and we were coming back. An adventure but from the comfort of our rig.
Tip: If you are using CG's leave by 9:00 and stop in the early afternoon. You can't beat the caravans because they have reservations but you can be ahead of most others.