Amount of paint for engine bay?

Finally at the step of painting the car in my build. I’m starting with the engine bay so how much paint would I need to buy? Just enough for the bay right now. I was thinking a quart might do it.

1 quart makes 2 sprayable. I would say a pint would be enough cause it becomes a quart sprayable. The engine bay is not that much surface area to cover.