Heres what I would do:
1. rims/tires. I'd go with 17's
2. lower the car. Depending on the miles I'd get struts to go with the springs
3. exhaust system. The way to go is the true duel system that picks up about 20 hp, no kidding
4. K&N filter and all the little stuff, you know
Good luck with your ride
Roger R