Lots of good advice already given. I just want to add that you need more time. It is a long way to Anchorage from Baja. 5000mi or so. That's 500mi per day for 10 days. Then turn around and do it again. And the towns, in the far norh, won't space out for 500mi days. Most are about 300 mi apart. Take the tent and bag. Gas is usually no more than 50 mi apart, and there is usually food there, and sometimes a room (pricey). Take some time in the Muncho Lake, Liard, Rancheria area. Kluane Lake to Skagway is another nice area that a lot of people skip, because they need the Prudhoe Bay trophy. Have a good trip, don't rush.