Before doing any "performance" modifications, you should try to restore any lost power by doing all possible maintenance on your vehicle; and possibly a compression test to check the health of your motor.

Secondly, I recommend upgrading your suspension so you can get know your car, and because it will make it fun to drive without performance mods.

By the time you do all this, you will start knowing how much power you want out of your car and how you want to make that power, either all-motor or forced-induction(you might change your mind a few times), and you will have goals you want to meet. Either way, you'll need a good, reliable suspension.

It really comes down to personal goals and budget. What's are yours?