I need a little help. I'm picking myself up a pair of AR5's in a couple of weeks and I got the choice between 170 and 176. I'm not very tall (5'10) but I've been skiing on 161's and I really feel I need a bigger ski. I was thinking of getting the 176 and center mounting it to make spins and switch a little easier. I however have never used center mounted skis and don't kno what to expect. So here's the question, well actually 2. 170's or 176? Center mounted or normal?