Replying to Nordica OMW

I did some christmas shopping and found last years Nordica OMW for $189! On evo. Even though it's a cheap ski and a good deal I'm guessing, I'm looking for a buttery playful ski that can handle the park every day, almost every run. I would like the ski to be a bit more "all mountain" maybe a wider underfoot. Im 5'8 120 pounds and if I were to get the Nordica OMW what length should I get I was looking at 167 but they also have a 174. I just now began stomping more technical tricks like blind 2s, surface spins, 5s etc. and I've joined the local team. Thanks for the help and Merry Christmas!