well ive done a few mods but i need peoples opinion on what i should do next?

ive got:
RPW race extractors
17 x 8 rims
2.5"cat back zaust
K&N panel filter(changing to pod soon)
got lowering springs ordered

what do you guys think i should get next performance wise? i like the idea of this sprintex supercharger(in a years time though) but i need some ideas what i can do till then?
any help appreciated

cheers guys :D

high flowed TB,
strut bar, sway bar
CAI