Another option is the Street Tuner from Cobb, I have it and tune with it. It will data log and let change just about everything. I would suggest that you find a good tuner, it is worth a days drive.
For the handling, swaybars, good rubber and a good alignment will make a huge difference. I would also get a rear strut tie bar, this will help wagons a waste on money for sedans. After that you can start to upgrade soft rubber bushings.
For an idea here are my mods:
Poltec end links
GT Spec front and rear strut bars
GT Spec fender brace
Gt Spec H Ladder brace
Gt Spec rear T brace
Many bushings have been upgraded
I run 17x7.5 wheels with 225x45x17 615s
I run -1.5 camber front and -1 on the rear toe set to 0 for the street, on the track I run -4 up front.
I will have to say that my car rides bad and makes lots of nosies, but it's great fun.