That will be a nice project. For a touring that colour blue, polished up, is my favourite colour, it would be my own personal first choice.
Regarding the bits for these their is a guy call Tims based in Northampton who breaks these old BMs. You should be able to find him with a google or facebook.
Based on facebook prices the sport / mtec bumpers make good money now and are a bit harder to come by but those 2 guys would be a good place to start looking.
Calipers sorted, discs and rebuild kits ordered, USA marker lights collected from BMW, exhaust trims swapped, steering wheel sent for re trim, new gear knob ordered, along with a few other bits.