In that case it depends on what you want to focus on, jumps, jibs, park. Really, I would consider flex of board/bindings(maybe even new boots) the most important factor. If you going after kickers or the pipe, I think something closer to 160 with a mid flex would be good, otherwise go more around 155-157 with a softer flex would be better. Plus I would detune the edges a little.
When I was in the Army I knew a man who had 3 rules about sex, one of them was "quantity not quality". I really regret not asking him what 200 pound twins would classify as.