First, you need to answer some questions. Will your cruising be out of sight of land (i.e., night passages)? If so you''ll absolutely need jacklines and a gimballed stove
so you can cook while heeled.
In the area of spare parts, at the very least I''d want a water pump
impeller, a fan belt or two, some hose clamps and a length of spare hose, a good small flashlight, plenty of spare line
, foulies boots and hats for everyone aboard - there''s more but I''m too busy at the moment (taking a break from what I should be doing) to be exhaustive. This, in addition of course, to the USCG required items which I''m sure I don''t need to list. Oh yeah, and what Sasha said.