You're 136 under foot and 160 at the tip. Take a look at http://www.blackdiamondequipment.com/en-us/shop/ski/skins/ascension-nylon-split-sts.
The issue with skins on your skis is that they're very wide. Ideally, buy a skin that is 160 mm wide and cut it to your ski's shape. It is ridiculously easy.
Debateably, skins should cover 100% of your ski's base contact area (everything that's not your tip and tail) and not cover the edge. This prevents ice from getting between your skin and ski and increases the glue's effectiveness if you're repeatedly reapplying your skins in a single day.
I know some people use skins that are narrower than the under foot base and cut the skin straight. They will most likely tell you a skin 130-140 mm wide will do you fine. I don't have any experience with straight cut skins, so I can't comment.
Khassaki > HI EVERYBODY!!!!!!!!!!
Judge-Mental > try pressing the the Caps Lock key
Khassaki > O THANKS!!! ITS SO MUCH EASIER TO WRITE NOW!!!!!!!
Judge-Mental > fuck me