That should be good. You're on the lower end of the weight spectrum for that size but if you enjoy free riding, a longer board will give you nice stable turns. I'd say go with it. I'm 5'9 173lbs and I went with a 158 custom x. I could of went up to a 160 but we're talking 2 cm here. That's less than an inch of added length. You won't notice any issues.