Vacation all I ever wanted

See the new user icon? I'm getting holiday fever. I've narrowed down the island (Oahu, primarily North Shore area), now I'm trying to figure out the dates. Spring break is right out, as I'd rather not have to fight ginormous crowds, so that leaves either the first week of March or into April sometime.

Suggestions? Any don't-miss tips, if you've been?

Mahalo!