For the records. Car posted in post #1 of this thread.
Setup is now:
Front: 15x6" Alpina replicas, ET12, Ground Control coilovers inc. shortened struts, TBA camber. Tyres are 195/45r15 Yokohama S-Drive. Perfectly driveable with rolled lips. Would highly recommend further guard mods though
Rear: 15x7" Genuine Alpinas, ET12, Ground Control supplied Eibach springs, 1" drop (?), spring pads still in. Lips rolled and have not had rubbing but will advise further if I go lower. 195/45r15 Yokohama S-Drive tyres.