The better questions might be, what is your level of skill and where are you racing?
If you're a top 5 club racer, then save yourself some money.
If you're top 5 in your country or the world, then you'll want top of the line everything.
At some point, our own skill level limits any gains made from top of the line equipment. I'm not saying to get the cheap stuff but allocate your budget to the things that will help you get around the track on race day.