As an alternative, I can recommend flying to Anchorage and renting a pick-up with a camper on it. It is easy to see the state that way in a late model truck.
I do not think going all the way to Alaska and going on a bunch of tours with tourists is the way to see AK. I like to stop at road houses and hang around with Alaskans. When you see campfire smoke on a remote road in the Yukon pull over and you might meet a Native family smoking salmon for the their dog team. Alaskans and Athabascans are friendly people and easy to be around.