The closer you are to center the better. but in your case i would be happy to have a 100 yard zero w/ around 10 moa from being maxed out. you dont want to zero at the extremes of the elevation. not only will it limit windage, but may cause some issues holding zero on cheaper optics.
another thing to try is lower rings, and possibly a scope w/ a 30mm tube to get a higher range of adjustment.
Thanks so much for your thoughts!
Are Burris Zee rings considered low quality? That's what is on there now, medium heigth. I will try the swap around with the rings and see if it changes my POA any. I don't think I can go to a low ring and have enough clearance for the trigger and I would prefer not to install a hammer extension. I have the Burris Signature Zee rings in hand now and am trying to locate the inserts kit for them.