I have an old Trek touring frame that I would like to get back on the road with a selection of modern components. Since I am already going to powdercoat the frame since the original paint is in poor condition, I am considering having a local framebuilder that I know add downtube shifter braze-ons so I can use downtube shifters -- the frame came with only a clamp on. I'd also like the rear spacing to be set from 126mm to 130 or 135mm to accommodate a modern hub/drivetrain. While I am having frame work done, would it be smart to have the rear brake bridge removed and have a longer one installed to be on the safe side? Or is it fine to simply coldset as is?