1) 15' of 1/4" fuel line
2) 5' of 5/16"
3) 20-30 all stainless hose clamps. (the smallest you can get that fits both size fuel line)
4) Two cans of carb cleaner.
5) Small tube of loc-tite (blue)
6) Synthetic grease
7) pack of good quality cable ties
8) shop towels
If you end up at the dealer this week to get your oil, pick new gaskets for the carbs. If careful the old ones can be re-used, but why chance it if you are going to be at the dealer anyways. Plus, since this ski had a previous owner, we do not know how much wear they may already have on them.
That's all I can think of at the moment.