I already put on springs and lowered it, got a short ram intake, dc headers and cat-back exhaust. Whats the next thing I should do with my car?

intake manifold, fuel rail, fuel injectors, fuel pump, & strut bar. that would be a good place to start in my book.

if you dont build the motor up (internal parts) the turbo will destroy your engine.

keep the car stock body wise, maybe a jdm look like side markers, lip kit, and a sweat jdm type R front end conversion. other than that dont mess with body kit's that have fiberglass or polyurathane because it will lower the car value and look like a toy car. horsepower wise with reliability turbo will be a good upgrade but a lot of day to day work will need to be performed like a turbo timer... super chargers are great but exspensive. if its me, i go all motor ls-vtec (not too reliable but very fast :) ilive in san diego so the racing scene is every day out here.

Put a bunch of e-bay racing stickers all over. They add horsepower like crazy!

it really amazes me how stupid people are on here. Like the h series swap. I mean come on dude seriously. Go turbo though if u got the money. And dont listen to people about buying brakes and tires and wheels and shit. Waste of money unless you plan on making big power

no man , save up and buy a turbo kit, it will be worth it, i love every minute of mine, turbos, thats the way to go man

ECU Chip. The Chip should have been installed with the exhaust system and before the Intake system was installed. The Computer chips add anywhere from 10-50HP.
You should also get a strut/stress bar to make the car stiffer and handle better. This costs about $50-150.
You should get light aftermarket wheels and performance tires for better traction and quicker acceleration.

A Turbo kit is most expensive and it is a big job. Make sure you have time and money before deciding for a turbo kit.