Hi from Florida and a BIG WELCOME to the iRV2 gang.
We're originally out of Duluth, MN (W. end of Lk. Superior) although, having sold the house and stuff back in 05, we now travel full time.
Just wanted to comment about your planned Alaska trip. Believe us, you sure won't have a problem traveling to Alaska on your own. In fact, it's likely you'll find it much more enjoyable since ya can poke around on your own schedule. Just head over to Saskatoon, to Edmonton, up to Dawson Creek and on to Whitehorse. At Whitehorse ya need to decide whether to run straight to Tok, Alaska, or run up to Dawson City, Yukon up North of Whitehorse, then take the Top of the World highway into Alaska, to Chicken and on back SWest to Tok.
Anyway, really think about going without being tied to a caravan. You'll very likely end up occasionally caravaning with folks ya meet along the way anyhow.
Again, WELCOME, and have good trip.
Steve & Lynette