It's all good!
What do you have and how fast do you really want to go?
13,12's or faster????
The faster you go,the faster the money starts to multiply!
Hint #1
The harder you get your car to hook on the street the better! I have had slower cars then the one I was racing but still won the race because I had my traction issues under control!
If you get someone out of the hole hard (not hard to do or too expensive at your level) the harder it is to catch you. It takes alot of horsepower to catch and pull on someone once you get him/her out of the hole by like let say 2-4 cars!
My .02