Vstol.....love the progress! Im actually just starting a similar, yet less aggressive build on my '69 and also plan on running the ET wheels LTIIIs. Mine's Fathom green so I went with the ceramic coated side pipes but I think Your car will look really sharp in the orange with black pipes.
Are you planning on a stripe of any sort or just straight orange? As was stated above, I think some guys go a little far with the orange/black theme but I think orange with a flat black stripe on the L88 hood and black side pipes would look good with either the ET wheels, or CCW classics with a polished lip and black anodized or painted centers (see below). Keep up the good work!!!
Flat black stripe with black side pipes:
CCWs - polished lip with black anodized centers