Congrats and welcome!
Most everyone on these boards are so into getting more power out of an already overpowered front drive car that they overlook the best money you could ever spend on any high performance car. Look into high performance driving schools in your area. Get your car on a closed track and have a professional guide you through the basics of car handling dynamics and learn to control what you already have. And, what you have in fact is a very, very fast car already. Learning how to get the most of it will put you at the front of a pack of highly modded, more powerful cars than yours in most situations. Also, being able to take your car to your limits in a safe manner will be far more entertaining than dumping money in ways that will never allow you to explore what it is that this car screams for! Bragging about some doo-dad to some yokel at the gas station is fun for about 31 seconds. All that will do is make you want to do things that will get you into a situation that you are not prepared to handle. This car bone stock will kill you faster than you can say CAI, if you can't back up the checks for mods that you have already written.
On a track day, you'll be able to waste people in 911's, M3's and any Mustangs. The car is that fast if driven properly. I can't stress this enough. It is way too fast for most street applications for drivers with average skills. Putting more power into a car that will at best, liquify $460 worth of front tires in 30 seconds is comical at best. Look around for some of the posts about what people have been able to do at local auto-x's and track days, let alone at the strip.
As for something that you could purchase to be able to attatch it to your new ride, I'd say get the Sirrius radio upgrade. It won't make the car go faster, but being able to listen to baseball, football, Howard Stern or the Playboy channel is something I've learned to need in the car and away from it.
Good luck with the car, and be safe!