[Spinnaker]

I won't go anywhere anymore without a spare ignition switch, after getting stranded when the last one went out. Had a spare at home but that doesn't do any good if you're not at home. They are so small, it is easy to throw one in the tool kit along with a small screwdriver. I also keep a spare serpentine belt in the spare tire cover. You don't need to carry the 24mm(15/16") wrench, they can be found anywhere. A belt isn't always available if you are far away from large towns/cities and it also doesn't take up much space.
Taking I-90 out all the way? If you take it all the way to Boston, you will have traveled the entire length of it, end to end. Always wanted to try that someday. Never been to the East Coast. Have a nice trip and can't wait to see the pics.
Hear it is raining cats and dogs back there, you should feel right at home!