Years ago I worked in a shop, and the rules were that we could only machine to the minimum size, but we were allowed to put pads on undersized rotors / drums as long as we did not machine past specs. Not to encourage borderline brakes, but if this is a show piece that will be driven lightly on and off the trailer, minor surface issues might be tolerated. (could cause pulling issues)
If it's a driver get them done right. It would be stupid to crash the car because you saved a couple bucks on the brakes.