Replying to Marker Griffon Demo Question

I am using a pair of K2 Marksman's for a trip to Jackson Hole this coming week, and they have a set of Griffon Demo bindings on them. They are mounted at recommended which is at -7cm from center. What I am planning to do since I like a center or closer to center mount, is use the markings on them for my boot size, and the toe and heel up in even increments as far as I can. Doing this I can get it to about a -3.5 mount which I think will be great.

Does anyone know if this will cause release issues, risk breaking the binding, or ripping them off the tracks etc since they will be towards the front ends of both tracks?. If it matters I ride at a 9 Din, BSL 318, 5'11, 155lbs. I'm an agressive skier, they won't be in the park there unless I am hitting jumps, and I will be skiing various steeps through powder, crud, groomers etc with some drops mixed in.