Thats such a waste to get new skis and destroy them in the park, the first day. I mean, you should actually ski your skis while they are in a perfect condition. After they get fucked up a little bit then use them in the park.
This is true, unless of course, you bought pure park skis and you ski almost all park, and you live on the east where there isn't much else to ski.
But if your somewhere good, use your old skis in the park for now.