Replying to Where to mount in 1080gun?

Looking for advice from those that actually own, or have atleast demoed this ski. I picked a pair of 174 guns from the Sierra sale as a glade/pow ski on the east coast, but it's becoming pretty common for people to be using 90mm+ waisted skis as their every-day all around ski. I have a feeling I'm really going to like the stability of a wider ski underfoot and these will probably become my everday ski. I ski 50% park and 50% all mtn. I'm 5'8" and weigh 163lbs. Should I mount ahead of the reccomended line? I dont want them centered but right now i'm skiing 167 chronics, and I'm not sure how easily i'll transition to a longer, fatter, more flexable ski.