BEA Spartans, 27.5 length carbon to carbon, 28.0 inches nock throat to carbon, 125gr broadhead, 30gr insert weight, 10gr insert, back of the arrow has 18gr of vanes, and 17gr bushing/nock. Draw length is 29, draw weight is 71lbs currently and might go up to 75. I’m wondering if I can do the 300 spine, or if I need 250. Thanks.