Alot of good questions. Let me start off by saying that just judging by your choice of bow, draw weight and draw length that you are going to need a relatively stiff arrow. If you go with an ICS style carbon arrow then I would probably suggest a .340 or .400 spine. .340 would probably be the better choice considering how most conventional single cam bows (like your Baby G) prefer a stiffer arrow.

My suggestion? Any of the Easton or Beman ICS carbons in a size 340.