Hello all!

This is my first post, so be gentle.
I picked up a 1995 GS-R this past weekend. My boyfriend is a mechanic at the dealership, so we picked up the car at a VERY generous price, and they're allowing us to finance almost $2000 of aftermarket parts (at wholesale) into the price of the car.
I would like to spend the money on performance. However, they don't carry superchargers and the only turbo kit they carry is $3250 wholesale. We already ordered the AEM V2 intake from somewhere else, and we already have a nitrous system that can go on the car once we take it off our Cavalier.
Here are the parts we have picked out so far:
AEM underdrive pulleys
DCSport 4:2:1 header
DCSport Short Shifter
Apex M1 cat-back exhaust
What other performance type parts would you guys recommend? The stuff we have picked out so far will only be about $750, so we have a ways to go.
Thanks in advance for your time. Being a moderator at one board and an admin at another (obviously not car-related boards lol), I know how aggravating newbies can be.