I agree with Sig. Pads and fluid are a must, oil cooler you maybe might get away with for one day if it was cool enough and you were going very easy, but if you drive hard you are going to overheat at any temperature.
I liked NJMP Lightning alot, challenging course with 2 blind crests and the great slingshot off the lightbulb onto the front straight. Easy to learn, difficult to master.
Here's my time trial laps from Lightning.
COMSCC NJMP Lightning TT 7-3-11 - YouTube