It's building up a 30yo steel frame, nothing really stands out as one can do it better than another at some point.
bikemig, gugie, rc, etc come to mind I guess. But really I would bet I wouldn't think twice about a few dozen posters on this forum building up a bike of mine.
I don't like bars that are angled high, saddles slammed, brake levers placed high on the bars, or gaps in bar tape.
So I guess I wouldn't want to use anyone that sets bikes up with those things.