Changing my arrow set up this year and wanted some input about which spine would be best given how I want my arrow to set up this year—aiming at a heavier arrow . I currently shoot a Mathews Triax @ 28.5 DL and 70#. Arrow length prob somewhere between 28-29 in. Magnus buzz cut 125 gr, half out insert 51 gr, vanes and lighted nock 38gr total, and depending on spine: 250 spine-10.7 GPI, 300 spine 8.7 GPI. Just wanted to ask for you guys’ input on this.