http://www.backcountry.com/black-diamond-ascension-nylon-sts-skins
get those in 140 and you will have plenty of room to trim

I agree the ascensions are a great skin choice, but you don't need the 140. The 125 will work perfectly. The ski has a ton of tip rocker, and is only 100mm undefoot. No sense paying more for all that extra skin material just to trim it off later. You generate the most traction from the rear 2/3 of the ski. And on the ski, especially with so much of the tip in the air, even in deeper snow, you will still have full coverage in the tail and underfoot. 125 is the way to go.