Yeah the springs give you a 40mm drop, i would go with the eibach sportlines - 40/30mm, but as the clubsport is lowered more than the normal sport, it wont be worth it really, as i will lose about 15-20mm straight away from the rears.
I will be using the standard dampers at the mo, as i want some wheels, uuc exhaust system and remap 1st, then i will save for a set of coilies. The dampers should be good for at least a yr with the springs.