If you will be without a car for transportation, making your bike your daily driver for work, then why not bring a cheap, used bike as a spare. You say you will have internet..so if your first bike breaks down you get online....order parts and tools for the repair...and in the mean time ride the used bike. I'm sure there is some sort of shipping to the island like UPS, Fedex or mail service.
1. I am remote and have no easy access to parts. Shipping is insane expensive.
2. An extra bike is not feasible.
3. Thus the original post asking for simple list of repair items to bring. Everyone seems to have some qualification, and I know everyone means well, instead of just providing a simple answer.