What size Twin Tip skis should I get?

This is the problem. every guy just like me loves to do the park but the key is that you gotta know what size ski you need. its all based on how well you ski. how well you can do your tricks. and how good you actually are. if you can land your tricks easily and perfectly, and your a ripper on your home slopes. your going to want about a 160cm. The smaller the ski, the easier it will be to whip them around. look at some of those professional skiers. their skis are like at their shoulders. (tip) don't do that though. if your barely or not even landing your tricks. you will need little bit longer ski. the longer the ski, the more ski you have to land on. picture it like a landing gear for a plane. the bigger the landing gear, the easier it is to land. same goes for skis.