Well Chris, first off welcome to the site.
Secondly for someone your age that just got there license, at 12-13 sec time slip...well thats a little to much i think. If you end up buying a car, i would do with what you stated, get a car and fix it up, the body, interior, ect ect. If the motor runs good i would use it and maybe mod it up slowly. If you know what i mean. Just make sure you find the right car before you get rid of that hard earned cash my friend