Personally I would go with a stiffer ski since you're not a small guy and you are still growing, go with something like a Volkl wall, Surface Blanks, etc. stay away from the punx I would say those are fairly soft in comparison to Walls or Blanks or even other skis. A stiffer ski will be fine on rails and anyone who says they aren't just dont like stiff skis, and they will holdup well on jumps and if you are planning on doing any pipe, you should go with a stiff ski with regular camber. Like I said
Volkl Walls
Surface Blanks (cheap to)
Armada AR7 would be good, little softer
Nordica Ace
All solid skis