If you were building this car for mainly street and a little strip use, BB Mopar making north of 550 HP with a 727 tranny what brake brand and kit would you use?"

An 11" rotor kit might work, but will not have a lot of "reserve" braking., unless you have pie cutter front tires.
I would not choose anything less than 11.75", rotor width effects how many repeated stops you can make, more or less.


And the adage "brakes stop the wheels, tires stop the car" still applies.