Your set-up is very similar to what I'm going to use this year. I felt that in exchange for the 47# bow weight,I want to use a heavy arrow because of the Snuffer. Out of a 47# Black Widow HS, a 29" 4560 CX Terminator with 300 grains up front flies very well for me. It weighs around 600 grains. I was hoping for 525-550 grains, but the 600 grains bare shafts best. The bow is nice and quiet, too. I want the heavy arrow with heavy FOC for penetration with the Snuffer. I don't feel that'll be an issue on whitetails with this combination. Good luck.
knobby