Oh my.. I didn't look at all your math...

I believe you need to test shoot it as well...Those numbers seem way off assuming you have a 28" draw and are shooting relatively normal poundage...(60-75 Lbs or so)

I know jumping about 200 grains on arrow weight will AT LEAST effect speed by 40 FPS or so, and probably more...

If your calculations are correct though...I'd like to buy your bow