If it doesnt hold up I can put a coat of clear over it
I'd recommend you just touch up the paint if it doesn't hold up. Adding clear only makes it more difficult to touch up later.
And it's a boat, when you're using it you can't even see 90% of the bottom.
IMO, if having a boat w a perfect hull bottom is uber important, get and keep a trailer queen show boat or a really nice wooden ChrisCraft model boat for the mantel, and LOOK at them.
Doesn't mean you shouldn't make it look nice when you finish, and take care of it while you own it, just try to keep some perspective.