Another bowhunter "Sees the light". Congrats. With age comes wisdom. Remember, you still are over the recommended kinetic energy needed to kill an Alaskan Brown bear. Considering that 99% of bowhunters in America will never kill anything bigger than a whitetail with their bow, makes one wonder, why all of the 70# hype? The difference you will notice with your new setup is that now the arrow sticks in the dirt 3" instead of 4" after it completely blows through the deer. Your bow will shoot quieter too.
Oh, another thing you will notice is that on cold days, a buck of a lifetime won't get buy you cause your muscles are froze.

http://www.huntingnet.com/forum/tm.aspx?m=2157608&mpage=1&key=i+have+seen+ the+light