Where do you ride, west coast, rockies, east?? In Washington you would be crazy to ride wet deep pow on a 163. Rocky mountain blower, i'd say it doable. At 165lbs i ride a 161 or 165 for pow. Is this a dedicated pow stick or a compromise between freeride and pow?
I'd look for a Arbor Roundhouse 167W Arbor Abacus 164 or Jones flagship 168W. I'm a little shorter and heavier then you and I have a 164 Arbor Abacus and the Jones Flagship 168W. The Abacus worked really well last year even on epic waist deep blower pow!