I believe you're right about being greedy with the count. I don't ever see myself needing near that many shots. Turning the power up is tempting, but I've got a .25 AT-44L that covers any higher power I might need. With the extended shot count I'm getting it looks more and more like I'll be selling the .22 FD-PCP as the P-12 is easily tuned to meet any power level up to 50 fpe with the current settings.
I'm honestly really surprised that it was as high as it is. The first P-12 I had, had the same mods (HuMa regulator though) and would only do about 40 regulated shots at 30fpe.