it wouldn't be that bad unless youre throwin 9's or more.
id say get the larger ski if your gonna have them for a while and ski anything outside the park but if youre gonna have the skis for no more than 2 years and are planning on spending 95+ % of youre time in the park get the 171's. i ski 174 rossi scratch fs skis and am as tall as you but 15 lbs heavier. the skis are perfect and will not be too small in a year or two.
i am relatively the same size as him and i have the 178's and i love them so ya, they arent gonna be too much ski for you, also i'm not done growing so ya
that's a little bit small, but soo many people get skis that are too big. im 5'8 160 and i think the 166 foils are perfect for me. 171 would prob be just as good, but w/e
i would regularly say that a 178 ski would be too big for me, but because of the softness of the invaders and the center mounting its a good size for me.