I agree with Michael. I think your fun is going to be limited by the brakes, especially if you have limited track experience.

If the green's are a "street" pad, I would get something more agressive. I would also flush the system completely with a good quality brake fluid (Motul or Castrol blue). Ducting air to the front rotos will help alot, but that gets a bit more involved.

Try to work on maintaining momentum and minimizing your brake usage and above all being smooth.

Are you using the factory seats and five point belts? Best to make the car as comfortable as possible so you can focus on driving. A more aggressive driver's seat would help.

If the suspension components are in good shape, I would follow the Doc' advice and swap out the anti roll bars with something bigger and leave the
rest alone.

Your biggest improvement in lap times will come from seat time which will result in an increased confidence in both the car and your abilities.

Have fun!

Tinker