Check out the Live Life 2's from surface skis. They are one of the most fun skis I have ever had a chance to ride. And they kill it on groomers and in the park as well as in pow. I have a pair of 189's that I'm going to be rocking as my pow ski and a 179 as my park ski.
The 179's would be a good choice for you if your going to be skiing a lot of tight trees and such since they will be a little more quick. And don't be intimidated by the rocker on them the nice thing about it is it acts a lot like a skateboard, because the nose and tail are flat and at an angle it make for some awesome nollies/ollies and has a bigger platform for butters/presses. It is definitely a ski worth checking out.
The dimensions for the 179/189's are- 140/112/132
You can head over to http://surfaceskis.com
for more info on the ski and http://www.surfaceskis.com/livelife2.html
for some more photos of the ski.