I'm 165 and I ride a 56 to 63 for park but thats my personally. For you 155 seems more ideal. The RC is a fairly stiff board. If you're looking for a park do all stick from Mervin look at the TRS or Dark series. If you're open to other brands k2 jibpan, k2 darkstar, never summer evo, ride concept ul, smokin mip, atomic hatchet, you could always take a look at my big review in the reviews section as well to get an idea of whats out there.