Hello, I'm looking to get a predator hunter bow from hunters niche.Being only 5'6" I have a 26 inch draw.I currently have a Ben Pearson gamester x50# @ 28.With my draw I figure I'm shooting around 45#.If I get a 60# @ 28 It should be around 54#?I shoot 29" 2117 legacy's with 125 gr points in the pearson. These group well .( I paper tuned them and get bullet holes) Will I have to change my arrow spine with the increased pondage?Any recomendations?