I wouldn't spend the money on that wilwood kit. The rotors are 23.8mm thick, which is thin, and only 285mm rotors. Standard falcon discs are 28mm x 298mm, which you can get in a kit locally for cheaper. You'd be better of reconditioning your current kit in my opinion than buying those, or go for a better wilwood kit. The biggest difference you'll notice on the street anyway is a good set of pads, often overlooked.
And as mentioned above wilwood have always had an issue with engineers due to their luck of dust seals.