I'd get race pads, if available, and hold off on R tires since PS2 are pretty good. I like Pagid yellows and PFC01 pads for the track only, they squeal horribly on the road.
The additional grip from R compound tires will tax your brakes even more. I'd also change out the fluid to Motul 600/660, which I prefer to Ate Superblue; Castol SRF is overkill.
The other thing I'd do is get an check the alignment and see if you can get some negative camber and reset the toe, caster. Not sure if this car likes to understeer as much as others.