Rotors are the last thing of the items you list that will make a difference. Blanks would likely be fine.
If you are truly threshold braking, I wouldn't go with ceramic pads. I would start with the Carbotech XP 10/8 for front/rear. I don't have personal experience with them, but from what I've read that's what you want.
And I would go with more track-oriented brake fluid. Motul RBF600 is a popular fluid and very reasonably priced.
Also, if you are truly threshold braking from 100+ down to 40 mph multiple times on each lap, even these upgrades won't necessarily be enough. Ice mode is common, and you may find yourself needing to introduce cooling to the brakes via ducting. Ultimately, it will depend on your driving skill level
