Replying to Are 175cm ish skis too big for a manlet like me?

I am very short, about 162 cm (5'4) and 115 lbs. I have some 164 devastators and I like them but sometimes they just feel too short and not wide enough for pow days. Last year I borrowed some old 178 moment night trains and I didn't notice the length too much and I really enjoyed them. This year I saw some 176 rossi black ops for cheap ($370) and I'm pretty confident that I'll have fun on them but if you think its just stupid of me to ski a ski that big, talk me out of it because I still have time to return them and get a different pair. Keep in mind I do want a ski on the hefty side but finding a twin tip, pow ski at a decent price in the 165-170 range is slim pickings.