I had a set of Shimano 600 brakes that reached just fine. Since the Trek 614 was built as a triple crank touring bike the clearance is there for fenders and 35c tire could be used (if I only had them-
).
Instead of actually PLANNING I decided to use a lot more of the self imposed lockdown time and do parts selection and fitting by the trial and error method. But the real side benefit came when it forced me to acknowledge that I would need a few minor things (like maybe a chain!) from a not quite abandoned aluminum lugged/carbon tubed Trek that I crashed hard two years ago in Indy and just can't bring myself to trust anymore. So with liquid fortified courage I stripped it down last night. No heart for an "after" pic,
