Complete system rebuild . . .
I want to completely revamp the braking system in my car.

Without having done any research to know if it'll work or if it's feasable, I've decided on what I want:

Larger rotors (slotted & drilled) at the front of my car . . . with some combination that'll result in brake hardware that overall is more powerful, and yet much lighter than the stock setup.

I want do create some ductwork for cooling of the brakes . . . particularly the front . . .

I want to ditch the ABS TOTALLY . . . I want all of the components out of the car . . .

Who could I contact about this? Is there a brake specialist somewhere? Or would I have to look for someone that might have done work on the braking for race cars?

Please advise

I think you can swap Altima brakes into your car. You could probably get an Altima booster, master cylider, rotors and calipers and put new SS lines in. Also it appears that this brake upgrade is better than the NX upgrade. SENTRASER might be able to give you some good advice.