"I am hoping for about 165-170mph in the 1/4 mile. I plan on using BOV's to control boost on the launch and act as the "throttle stop"."

BOV's dont control boost nor will they act like a throttle stop. they are already open when you are off the throttle releasing access boosted air. Those would be wastgates. And if your looking to get involved as what you are talking i would invest in a good boost controller like AMS500 or 1000 or boost leash.

X2 on the gearing suggestion.