Well I got all of the pieces together this past weekend and everything works! I've got a 5-8 speed chain on order from my LBS but I put my new-ish 11 speed chain on just to play with it. Shifts very well with the indexed Campy shifters and Shimano 105 rear derailleur.

I'll be taking it out for the maiden spin this weekend to pick up the new chain. I'll carry a couple of screwdrivers with me to make adjustments along the way

A pair of SPD platform pedals from the same box 'o parts the chain and rd came from round out the mess.