A pink Joe Waugh - first build ever

The brakes are short reach on it, but the Shimano you've found are plentiful enough, are you certain it's 50mm? have you got a spare brakes you can put on it to see the clearance?

Kinda certain, measured with some decent measuring thingies but not so sure about the back wheel rim as the braking surface is shallow and high. My mate might have some that I can play about with, good idea. I found those Shimano 105 ones on velobase but can't find them for sale anywhere (at a decent price).