I generally go for simplicity, basically because I am lazy and I like the fact that my angles for my bindings are always the same, and I know how they will react in certain conditions. So I adjust my aggressiveness and method on the slopes, rather than changing the binding. That way if conditions change during the day, I know I'll be fine and won't waste time adjusting and getting used to the new settings.
156cm would probably be the best for you, the bigger you go the less responsive it gets. I used a 162 once and it was like sailing on a boat
