I'd say, go for a powder specific ski with a little bit of versatility and when you get some itch to move your butt to the park, buy another pair of skis. if your spending time in the park but not insane amounts even a cheap broad-proformance pair would do yah good. Better than spending big bucks on this all in one super ski to bang the shit out of it and buy another one the next year anyways. You can keep both longer. Sounds like you ski enough to be sporting more than one pair.
Just my thought.