Replying to Picking a new park ski.

Hey guys just a few questions I want to ask before I purchase a new park ski.1) I'm 6'1 weigh about 160lb; could i get away with a 177cm ski or would they be too small? 2) advanced skier, not good in the park although I can do 3s, hit rails and boxes; what would be a good ski to have for the park. 3) I've been looking into the line afterbangs although I've heard they are heavy, should I still get them? First thread so be easy on me. Thanks