Absolutely untrue!!! Top quality (and I mean TOP quality) fluid is absolutely essential especially for Brembo calipers....fluid should definitely not be something you compromise on. I use and recommend the Brembo LCF600 Plus which is around $90 per bottle.
Dom, pad squeal will happen with most pads after some track work. I think for your purpose the DS2500 would be the best option. And I agree that the rotors only need to be replaced if they've worn too much. It may be useful to get them checked for glaze and have them skimmed if neccessary.
Shop around for DS2500 but both Perth Brake Parts and Maximum Motorsport offer discounts to IWRXOC members.