How would this set up feel, hit, sound, etc..

2003 Extreme VFT with 80 lb. limbs, 30 inch draw
Muzzy ZE
Trophy Ridge Matrix sight
Stbilizer - Undecided 6 - 8 inches though
String loop

Questions, how heavy of an arrow would I need to shoot safely?
Any guess on speed with the appropriate arrow weight?

I think the IBO on the VFT if 323-333 with 70 lb. limbs and 30 inch draw.

I am thinking of this for next years set-up. Any comments or opinions are appreciated. Thanks