I think it's just a matter of crunching the numbers. BB height (probably not an issue), chainstay, seatstay and fork crown clearance for the 42mm tires. Today I ordered the 126mm hub, switchable dynamo, leather wrap and a bunch of other stuff likely to get me in dutch with the wife.

You might be able to use Dia Compe 750 centerpulls, but I would probably just go with Tektros.