I think your board is a good length. Im 160lbs and ride a 154. But a 157 isnt too bad. What I have noticed, (and Im no expert) but boots and bindings made the biggest impact on my riding performance. At a level of expierence such as you and me, we won't really notice a drastic change in rideability from what board we use until we get some more mountain time. I rode my friends Burton Royale and my K2 Union back to back and noticed no difference in my performance, where a more skilled rider would notice. Keep the board for a bit longer and maybe use that money to get you some boots that fit you good if you dont already have a pair. Thats my .02 But like I said Im new to this sport too. Just giving you the same advice people have given me and from what I've noticed in the little time I have been riding.