BA is right. The rider is much more important than his gear. You can butter on the K2 you can hit jumps/kickers on the K2 you can do rails/boxes and all the other cool features on the K2. Buying a new board will not teach you the technics. Unless you just want a new board, the K2 WWW will fulfill all your desired needs. Practice, watch videos, practice, talk to people on the hill about it, practice and did I say practice.
Have fun trying and enjoy the rewards.