Ethan, a few tips:
1.) See if you can get a Rear Bumper Covers from the SS version. The biggest eyesore on the TB, Envoy, Rainer, Saab 9-7 is the "coffee can muffler". The SS covers that eyesore and makes a complete redo of the bellybutton end. Also, throw a Cold Air Intake like an Air Raid, K&N FIPK on it. You'll gain about 20hp with that engine.
2.) Some are ripping on the wheels, the wheels you chose compliment the vehicle. Just keep a close eye on your CV joints up front and Wheel Bearings in the bellybutton end. The added weight makes a difference.
3.) I see what people are talking about with the Stickers. But honestly, stickers aside, if "someone wants your chit, they're breaking in regardless".
4.) Enjoy it.