What ski for me? +k

Well I have come to the conclusion that I would like those fancy rocker skis designed for the park, I have looked at the the k2 domain in 159, the salomon 2012 in 163, also the armada halo in 170 but I think they may be a little long since I am about 120 pounds 5'6". I will be taking these skis in the park 70% of the time, then 30% well I want to say "lightly gladed terrain." It's almost all natural but the brush is cleared in the summer but still worth having rocker in. Other info would be I'm on the east cost so no real deep powder and cliffs about 25 feet at the very most. So really I'm looking for some input on what skis would be the best for me from the ones i listed or other skis that might be similar, thanks.