Brake fade idiot light is on .. have a few questions

[vijen6]

I've been driving around for a little while with the light coming on and turning back off. Now its just on permanently and there's lots of squealing so its time to bite the bullet and get the brakes done.

I called my local mechanic and the quote was $480 for labor both front and rear. Is this normal ? I trust the work of this shop but I was expecting a lower price for a simple brake job.

He also said he always change both pad and rotors at the same time for any brake job and this didn't sound right to me either. Is it actually something special about the Porsche brake design that requires this ? I think my rotors are still OK but I'm not 100% sure. Steering wheel shakes a bit during heavy heavy braking but nothing too violent.

As far as pad / rotor choices, I am going with Hawk HPS and Bola rotors ( if I need them ). I have never tracked ( although want to ) but I do drive pretty aggressively on the mountains near my house. Is this a good pad / rotor choice ?

Thanks!