I'm 5'10 and ski a 169 core center fujative and it's great, sometimes I wish I had a 179 but when I ski I tend to forget and just have a good day in the park and pow. For you I'd recomend anywhere from 169-181, 181 would be pushing it but for a ski such as an Addict or Invader or anything symmetrical that is supposed to be mounted true center a 181 would be fine.