I agree with the above suggestion for selecting spring rates - contact TCK directly. BimmerWorld, HP Autowerks and VAC are other great options because they all carry the full TCK suspension lineup.
However, having used the TCK SA setup on my e92 M3, IMO, 350/600 will be very "comfy" on the street - I was running 400/600 and that was still a very "comfy" street setup.
Can't help you with the Vorshlag camber plates. I've only used GC and KW plates on all of my suspension setups.