Rotors:
Z1's rotors are pretty cheap, you can get them slotted (I wouldn't recommend drilled, IMHO, but it's not gonna make much difference one way or the other really):
Akebono 370Z/G37 Sport Package Performance Rotors . If you want plain blanks without slots just buy OEM ones:
Front,
Rear. The OEM and Z1 options are about the same price though, so I'd just get the Z1's. If your existing ones look good (no pulsation or steering wheel shake when applying the brake, no obvious signs of damage physically, not worn too thin), you really don't need to change rotors though.
Pads: stock pads are fine for street driving, so are all the street pads you'd see in Z1's kits, e.g. the Posi-quiet.
You don't need to worry about SS brake lines and fluid upgrades for street driving, it's not worth the trouble.