Yeah pkovo is totally right. That board is so thick and chunky so it floats really well. Honestly a 5'5" or maybe a 5'6" would be perfectly fine. I mean I'm the same build and my Shortboard isn't even 6'0"
Im 5'9 150 and i ride a 5'10 fishcuit that i love. It takes a while to get the duck dive down on it. You have to start pushing it under earlier then really smash the tail down hard. You then come flying up like a submarine in the movies haha. Besides that though, I can catch anything with it. And it planes to skip flat sections really well. Once you get it dialed in after a few months it becomes magic.
i dont know where ur located, but chk out the brian wynn models. the fishcuit is a very fat chunky thick railed board. I didnt like it and Im 190. I ride a 6'0 wynn and i could probably go shorter by an inch or two. i think brian makes better fish than CI.