Replying to Volkl Wall Vs. Volkl Ledge

I'm receiving a pair of Volkl's as part of a scholarship thing and I'm stuck between the Wall and the Ledge, and what size I size I should get. I'm female, 5'4, 115 pounds. I'm competing at a national level now in both park and pipe, however not really that experienced with freeskiing (severe lack of competition), but I'm looking to be. Also I would need to get 2 pairs of the same ski, just in case park ski breaks or something, and I can just hop on my pipe skiis for comps or whatever so I don't have to learn new skiis.

So basically I need a Volkl ski that can double up as a park and pipe ski, would suit my small stature, and is made for a pretty advanced skier. If the ledge and/or wall don't fit what I need, I would really appreciate some suggestions. Honestly have no idea what I'm doing. Thx.