im your size, the shortest i would go for park is 175, i ride 179, would go up to 181. For freeriding i go 182-191. Seriously, this seems like its long, but youll appreciate the longer length. it doesnt slow down your spins, it just makes you more stable so you can spin better. trust me. which ski is a broad topic. Depends on where you live, what exactly you want to use it for. I would say in general the skinniest youd want is something like a 178 invader or something. for park i prefer a wider ski, but i ski a lot of chop and slush and the such, but i wont ski anything skinnier than 95 because ill sacrifice a little edge reaction for the stability in the conditions i ski. In short, this topic goes really far and ive been rambling due to my current intoxication but yea, good luck with this quest.