I'm planning to do this trip
Great trip you have planned, I'm tuned in and following. Currently I am planning to do a similar return trip from Vancouver in 2012 with another friend. We will be shipping our bikes to Vancouver, doing two trips, one through Canada and USA for 6 weeks, then a second up to Prudhoe Bay and return, along a similar route to you.
1987 Suzuki GSX 750 - long gone. 2008 Honda Varadero - got dropped
. 2007 Triumph Tiger 955i