your stack is backwards, thick goes in the middle... thats a very aggressive tapper 0.005 if my calculator is right.... the length of the riser and width at the fades makes a bit difference as well. what is your goal weight. if i where starting on a new one i would start with .360 in the middle, 18" riser and 0.002 or 0.003 tapper. if you use that stack about .400 with that much taper i think you will need a tip wedge you might come if i had to guess our going to be 50-60# atleast off my forms you would be. you can run it thru supertiller to see!