Brake kits and set up should be decided with a few factors in mind, which I haven't seen asked here. What tires are you running? What type of brake feel do you want? Have you tried to activate ABS in different speeds? Because the stock brakes can lock up most street compound tires with a good set of pads. Bigger brake kits and brake upgrades in general are mainly for heat management on these cars. There are other reasons for upgrading the brakes, but that is the biggest benefit. The reason why ducting has been recommended is for heat management as well. You stated you want to stop on a dime repeatedly. Heat management is what allows you to do that.