Conrad..my suggestion to you on how to spend money for your box, beside the wheels, is as follows:
-D/E (Drivers Ed)
-A/X (Auto Cross)
-Track (Mazda Speedway)
*assuming that you want performance upgrade but if you want exterior upgrade:
-Lights = Done
-Wheels = not yet
-Lowering = option
-Suspension = option
-GT3 kit = might take awhile
Next month Im going AX, I'll take you with me so both of us will shart in our pants coz' that will be my first time going