Coot...If I were you I would look into hunting the central canada barren ground subspecies in Canada's Northwest Territories... There are only a handful of outfitters up there and they tend to be honest and well oragnized( unlike some outfits in QUEBEC)...
The migrations tend to be more predictable than Quebec or Alaska...
Best of all for you, in most of the camps up there folks with limited mobility can hunt from a boat, traveling around and glassing animals until you find you want in a place where you can go ashore and make a stalk...These hunts are all guided, either 1x1 or 2x1 and your chances of bringing back a big one( or two) are very good, certainly better than going unguided in AK...In many camps the success rates are near 100%... I went up in '94 to Adventure Northwest's Little Marten Lake camp and had a wonderful hunt...Lots of animals, great food and accomodations, and the Inuit guides were a hoot...
Along with Adventure Northwest, I have heard good things about Peterson's Point Lake Lodge and Mackay lake Lodge, and others that I can't recall right now..never really heard any bad reports about any of NWT's oufitters...