dude id get around a 175 if i were you. or something around there
"What I care about is being able to click into my skis for the rest of my life. I care about being on top of the mountains with my best friends. If I'm on my skis, I've got a big smile on my face. And I want to keep it that way." T-Hall http://vimeo.com/thenewsolution
I agree. If you get a mid-high 170's ski it will be a little bit for you right now, but will help when you're landing jumps. If you get up to 5'10" or so it will still work for you, so it's going to give you the longevity.