Originally Posted by newbie96
My board is a 152, and I am about 200 lbs.
Sorry didn't see that when I was posting. It's not going to be un-rideable, in fact it should be easier to learn on for the first couple days. That said at the moment you're probably better off on a 157-159 or so for learning. Even as you come down in weight, your ability level will come up with experience, basically cancelling out any change in optimum board length.
What's your target weight?