I'm using slotted but plain are better. (Stoptech BBK on the front and stock brakes on the rear) Smooth rotors resist cracking from the heat better, more metal overall (good) and cheaper in the long run. I cracked and grooved my Stoptech 2 piece rotors and you don't want to know how much it cost to replace the outer rings. Stay with inexpensive parts. If you do lots of track days the rotors wont last, the calipers will need rebuilding every 2 years (piston seals harden and crack) My best recommendation stays the same. All pads that are rated for temperatures of 1200º to 1600º (what you really need for a fast track) will be almost unbearable on the street. I used Porterfield R4S with my stock brakes and they were fine until I got fast and learned how to brake. You could use them or something similar like Ferodo 2500 if you don't want to be changing pads but having 2 sets is a better decision. I used ATE Blue for a while. I boiled the fluid after pulling off the track with no cool down. Otherwise I might still be using it.

Les