Replying to Ski weight?

So I have the volkl bridge 2013's which is a full rocker ski.

I find them super stiff and hard to butter well. They are also really heavy with my ski boot (Salomon X Pro 110).
Like 5 kilograms per ski and boot together (11 pounds).This means its 10 kilograms (22 pounds) on my feet altogether.

Are my skis suitable for the park? Does weight affect your performance? Does rocker make doing park more difficult (jumps and jibs)?

I'ave heard that camber is the most suitable.

Thanks for the help, I really appreciate it. +k