go over everything in your car that you can(check fluids and belts/tires, anybody can do this)..... or have a mechanic look it over(but of course he ll recommend a new motor)... carry an extra belt, have AAA or equivalent. I bought AAA platinum when i took my 1985 truck on a similar journey.waterleave guns at home(im not anti gun)food/munchiesblanketsemergency road kit?snow chains?
I would go get it checked out by a mechanic to make sure that everything looks good, since you do not want to break down somewhere... Good luck, that is quite the drive!