According to their chart I would say you are borderlined. If it were me I would get some 7595's but only after trying your 5575's first. They may fly well. I shoot 5575's out of my Mathews at 70lbs with at length of 28.5 and I am borderlined as well but they fly very good with 100gr points including broadheads. However, I also shoot 125gr broadheads as well, and according to the chart for me I'm underspined, still get great groups in line with my 100gr broadheads and fieldtips. There aren't any signs that I'm underspined. I would say give them a try and see what happens.

Here's GoldTips chart and where you are at.