For tires, Vittoria Rondonneurs are getting some very good press. 35c. Schwables for the gold standard. I'd carry a folding spare. Haven't found one brand of tube any better than another as long as they are not lightweight racing tubes. Michelin makes a slightly thicker tube than standard. For a trip that long and remote, I'd go with those.

For weight stablization, 4-5000 calories/riding day. That's a lot of Big Macs. Getting enough protein on tour can be a challenge. Balance your diet with a bottle of V-8 juice every couple of days.

Shipping your bike by plane or Fedex will both cost $$$s. The easist way is to ride it to a bike shop and pay them to pack and ship it. Figure on about $200 from Alaska.

Henry makes nice tents. Least they aren't yellow or orange. I'd pick one with about 28 sq ft. Not too small, nor too big. Don't forget the footprint. 4 mm poly sheeting will do. I attach mine to the tent floor and leave it there. Makes for quick setup and take down.

For a trip that long, I'd go with a multifuel stove or none at all. You, otoh, may be hardcore enough to coax up a twig fire every night.

Talking to yourself is normal. Often loudly and profanely. Strangers tend to shy away.

Addenda: You didn't mention raingear. Consider Northface Venture. A bit pricey at $140, but tough and very functional. You can make your own shoe booties out of the same poly sheeting you use for the footprint, and some duct tape. Ain't pretty, but durable, cheap, and rainproof.