You could pulley down now.... Seriously

Cam is going to be the way to go if you want power throughout your wideband and your willing to spend the 1K(unless you go with VS)it will cost you for all the parts to go along with it. Rockers won't cost you anywhere near that. It's worth to go cam in the long run if you plan to further mod the car. I would suggest a XP cam if theres any chance you might go turbo in the future.