If it is a 1986 or later with 3 piece alloy cranks, I would refurb your Sprint with:

* new rear wheel.
* new Tektro R559 or R539 brakes, depending on the reach required.
* new bottom bracket.
* new chain.
* new RD if required.
* new FD if required - doubt it.
* new cables and housings.
* new balls in the headset and front wheel; with marine grease.
* fenders.
* lights.
* brifters.
* cross levers.