With that amount of power and the parts you have in it, I don't see any reason to sweat it!!!! I was running a 8.5" 10 bolt with stock everything but, richmond 4.10's for two seasons without any problems at about 420 HP. My car was cutting 1.65 60' times at that point. I was a little leary not having the c-clip elims! I would think you should be good into the low 11's with that rear, the way it's set up! I would look at your driveshaft more at this point!
