Mechanic Check

How much would it cost from a good mechanic to look over my car and tell me whats wrong with it? I know there are a few things wrong, but i wanna fix my car to running perfection b4 i drop 2g's in a nice system. How long would it take, because i was driving it today and the check engine light came on and i checked the error codes and got e53 and e30 the e52 is ecm reset, and the 30 is a fuel injection problem. I don't need it perfect I just don't wanna have to worry about it. Know what Im saying? My dad's owns his own body shop so he will let me fix it there, its just he doesnt live with me so he doesnt know i drive it yet. I just wanna look at how much its gonna cost, also the inflatable restraint light, and anti-lock brake dummy lights come on. paid 800 for a nice looking car, and runs pretty good, but no-one liked to take care of it, so problems happened.