I rode 148s this season (Ive grown 5 inches since then, I'm now 5"5) and I've switched to a 168 and 170. You should be just fine. It will take a few days to adjust to, but overall it will be great. I used to use womens boots and switched to Full Tilts which are light but they felt real heavy compared to my women boots. After a week they felt just as light as the Womens. Just adjust and you'll be fine.