Hey guys, i need your opinion on what I need to do to my car if I track it 2 times this year and go to 12 -15 autoXs. I have changed my brakes(Legend caliper upgrade), header, exhaust, cat, and front sway bar. (These mods are going to be installed soon)

I know that my timing belt was changed when the car had 90K miles. My car now has 157K miles. I don't think the water pump has ever been changed. Should I have these changed?? How much am I looking at to have each changed??

Any other things I should look at before I start tracking?

Oil suggestions??

EDIT: Oh, the clutch and axles have been changed too.

Thanks