Here’s a Pake “Rum Runner” single speed that I built for a friend of mine.  It’s a 56cm frame with a KHS track fork, an Surly wheelset with flip-flop rear hub, front and rear brakes, and riser bars.  The tires were the stock Avocet 700x32c skinwall slicks came from my RB-T, which should deliver a comfortable ride on broken urban pavement.  Simple!