the best bang per buck is would be to contact collin/adam at weaksauce.org and order yourself the ground controls/koni yellows package, and you can get it with custom spring rates. fully adjustable ride height and damping. for camber kits, i would recommend the skunk2 pro series front and rear camber kit.
it really depends on what are you gonna do with the car, ie autocross, hpde, drag, ect. front/rear sway bars and polyurethane bushings would be good upgrades to look into.