I did about 2000 miles on my Tiger in a bit less than a week. The gel seat or a similar pad would seem to be a very good suggestion, as well as a tire fix kit. I also agree with a chain lube each day. If you are using Mobile 1 or other more rare oil, you may want to take some with you. I would suggest putting some in a small container, rather than the whole quart (the same with your coolant).
Honestly, my biggest mistake was taking too much. Pack as lightly as you can stand, and be prepared to buy a few things as you go. Have multiple layers and rain gear on board. Most of all, take a camera, lots of maps, and have a great time!
Ride safe ...
Dave
