Replying to Mounting msps supermodels

just bought a pair of last years supemodle 180's. im 5'11" and 240. i did a searchbar search n the guys were like 150lbs that were asking where to mount them. i need a bit of help this is my all mountan ski n since i weigh so much i think ill be able to flex the ski well. so i need sugestions i was thinkin of 3 cm back from center or on freeride. oh an i ski about 60% all mountain n 40% park -i live in wisconsin- when i can i ski about 80 or 90% pow n 10 or 20% all mtn./park