the answer isn't larger, the answer would be compound. look into a higher-performance brake compound. i race miatas for fun and we do just fine with the small factory brakes, BLANK (not drilled/slotted) rotors, and a good pad/brake fluid. can do 30 minutes of continuous track time with no problem.

slotted/drilled rotors aren't needed. you're just getting rid of surface area/material that can help slow you down and dissipate heat. modern pad technology doesn't really have the same "gassing" issues as when drilled/slotted rotors were developed. if you like the look, cool. otherwise..

So, i bought an 01 Kia Sportage. before i even drove it, i nick-named it The Goat.. it has been just like a goat.. stubbern at every corner...