What cam should I get?

It's more of the duration that will kill the engines performance.
Tell us your set up and the intended goal of the car.
We'll also need to know the rear gear ratio and tire size. Weight would be helpful in the cam choice.

Anytime you change a cam, more so from stock to a performance cam, you need to get the valve springs to go with it. It is sooooooo worth the cost to do so when you change from a stock cam to a performance cam. Not doing so can be engine damaging.