First off welcome to the family,
Originally Posted by 1993 SLE
you first mods should be a good tune up
then you can add a CAI and high flow cat
I agree, after getting her in good running shape, intake and exhaust is a good place to start. Maybe from there a performance PCM?
If you're on a tight budget you can start by gutting your stock air box.
A far as making it look good cheap, a good washing and waxing is all these cars need to look really good. You can do little things like getting clear front corners and some silverstar marker lights.