wow man. that's a pretty vague question. You need to input a few other things for that answer... how wide/thick is the board? what kind of tail? what fin set up are you looking at? are you looking for a gun, semi/minisemi gun, step up, thruster every day board, pod, fish, minimal, velo simms, or any other alternative kinda board? Then the questions begin of what kind of wave are you riding? Beachbreak? Pointbreak? Reef Break?
I mean I have quite a few boards and they vary from a 5'6 velo simms up to a 7'0 CI MSG (mini-semi gun). My normal everyday board is an 5'11 MC Bonzer 5 fin octafish, my thruster is a 6'2 Zamora, and my step up is a 6'4 MC 5 fin "Shelter" bonzer. I'm 5'11 X 190. those are the three boards I ride most often but I also have a dozen others that vary greatly size wise depending on the shape/design of the board and what it's intentions are for.
I know this isn't a direct answer, but you need to give more input for a better & more concise answer.