Don't get too worked up on exact braking zones and such from a video game. They may or may not translate to reality. Just be familiar with where the turns are and listen to your instructor. He'll tell you what to look for and where to brake, turn in and track out.

3 month old ATE is probably okay, just give it a bleed. I've had good luck with EBC Yellow pads for mixed duty. They're good for the track (especially with big brakes) and not TOO aggressive for the street. But, any track-rated pad would work. You just want something that's not going to have a melt-down when it gets hot... and they will get hot.

The difference between ATE and something like Motul is the boiling point. Check the specs. ATE is a really good "bang for the buck" fluid. It's got a pretty high boiling point and a good price point. To get higher you generally have to spend considerably more money.