Tom,
After reading the 'specs' again I'm going to say with the information given that my guess would be down to 1 circuit.
You don't mention it being a store so I'm taking out the Show window circuit.
Glenn,
The way I'm figuring is that Our 'specs' say a repair facility. This could even be a portion of a larger building which is not 'accessible to pedestrians' and therefore would not need any Sign or outline lighting.
Sparky,
Aren't those the requirements for sizing the service? I don't see any required lighting or receptacles like there are in Dwellings.
Tom?