I'm having mental images of a tall skinny white kid who's ride just been pimpedon MTV, and he's running and waving his arms in the air, thanks for pimping my ride, thanks for pimping my ride.
Pimping rides is adding stuff that is not needed is rice.
Unique is not rice, it's high end customization with taste.
What you have in mind, is low end customization, with everything in it. Big exhaust, big rims, big wing, tints you install yourself, and those cobra LEDs on your windshield wipers.
I say, don't fvck this car up, it look pretty. Instead, make it into a racer, or road touring. Rims, I'd leave those, they look pretty, or I'd get same size, chromed, or deep dish black rims with brushed aluminum lip. No wing. Engine mods. Suspencion mods, and interiour mods. Make it a sophisticated car that is appropriate for your age. Add some performance spice into it through engine and suspencion.
Go for a hidden muffler with american style exhaust pipes on the back. No big mufflers sticking out.