Re: New to warmwater
It's really the size of the flies more than anything, and some of the stuff like poppers are pretty wind resistant. Size of fish isn't really the issue, though a rod with some guts is good to have to use with heavy tippets in cover. If you had a 6 you could probably get away with that, but i think a four weight might give you fits throwing size 6 (and up) poppers.
Other might wigh in with different opinions- Big Cliff, another moderator on the board does a lot of fishing down there. Hopefully he'll weigh in-- if not shoot him a PM.