Ok, here is the way I do it for wood arrows and it has never failed me yet. For a 55# bow,and all of your bows are center shot or past center,except the Black Widow, I do not know about that one. So for a 55# bow add 5# for center shot,add 5# for modern string,add 5# for every inch over 28",go up one spine weight from the git go, ie 60#. so 60+5=65+5=70+5=75. So an arrow spined at 75# would be about right. I know it sounds weird but trust me it works. Ask Shawn Leanord, he does it very similar. Now this is for using points up to 145gr. If you go above that you might need a stiffer arrow.
Danny