I am shooting a Mathews Outback with a 28" draw and set at 69lbs.I shoot a Qad Ultra drop away rest.When at full draw a 27" arrow gives me a little over an inch of arrow before my rest.Right now I am shooting CX 400 30.5" arrow and 125 grain tips.I would like to use a shorter arrow with 100 grain tips.Is this arrow correct for front of center and spine,Gold tip 5575 hunterpro 27 1/4" 4" quickspin vanes 100 grain point?Also if I stay with the CX can I shoot the above specs with a 300 or do I still need 400's?Thanks in advance.