One ski quiver?

I am gonna be buying some new skis this year and I was wondering if anyone on here could give me some advice, i am looking for a ski that can pretty much do whatever I need it, I need something that can handle medium height cliffs and a some powder, is light enough and soft enough to do butters(real curving the nose butters not just changing direction like you do with stiff skis) and 360's on the little lips and ledges on groomers but is also stable enough to do rails and handle a few tricks in the park. Iv narrowed it down to line blends, k2 shedtor 102 and armada aldente I am 16 and 5'7 and 130lbs. So the ski can't be to heavy since I am small. Also what length would be good for me.