Am I correct in thinking that a 350 spine and 10.2gpi @ 28in a 45.3 grain insert a 5.7grain nock NAP quick fletching( Im not sure on exact weight but i figured 15grains) and a 100 grain head will weigh out to 451.6 grains? Seems a little heavy to me? Am I wrong to think this Setup basics: hoyt carbon element 28.5in draw 74lb draw weight