Welcome,
You're gonna love that car! I've only had my SRT coupe for the past 10 months, so I am somewhat of a new guy myself. There is a lot of great information on this site, all you have to do is look. In my own case,
I started with a dual cold air intake from Needswings. Expensive, yes. The best around, YES! It allows the engine to breathe better, and results in a noticeable improvement in performance. You can also hear the supercharger "whine", which is cool as well.
The next thing I did was replace the Bosche intercooler pump and separate the intercooler and engine coolant systems. This has resulted in the car running much cooler, and the S/C no longer cuts out if it gets too warm outside. I highlly recommend this mod.
I've also changed stereo systems, since the factory unit is not that good. Otherwise I'm just enjoying the car, and waiting to decide what mod to do next. I am in no hurry, and suggest to do the same.
Best of luck on the new ride. Tell us about it (ie color, mileage, ect)
We're all nosy people around here, and love to hear about each others cars.
John