Great to see a young driver with their head screwed on right!!
However, I'd steer clear of the E-bay cheap stuff!
My suggestions:
- New wheels
- Maybe lowered on springs and suspension
- Super S Steering Wheel
- Super S clusters with Rev Counter
It's better to save for the bigger changes, than little things that could make it tacky very quickly!
I'd show you mine, but it's a secret atm! 
P.s: PLEEEEEAAASE Do not get that fake Blow Off Valve!! You WILL look like a nob!!