Obviously the choice is yours, but we would never tie ourselves down to a caravan. We are amazed at how many there are especially in Alaska. I think Tee Jay pretty much nails it,>> There are very few road choices in western Canada and Alaska. The big decision is to go around Alaska clockwise or counterclockwise, take the Alaska Highway north and the Cassiar south, or the other way around.
It is a simple road trip on decent roads. The places you stop will have civil people who will be friendly and helpful. They all speak english, and all accept US dollars and credit cards. <<
The ability to go where you want, when you want, for how long you want wins out for us.