In your spare time read this:
Car Bibles : The Brake Bible
For reference it's 180 for 2 front oem rotors.
Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com
Drilled, slotted, or drilled and slotted will have no worth while benefit for street driving. They a number of negatives to them, one being a tendency to wear pads faster and any heat issues would be better resolved from by other methods (better pads, fluids, brake ducts, etc).