Jon,
thank you.
I'm thinking on 35mm because we have the equipment for free from school and some film.
You're right about the overhead light, we counted in reflecting boards.
I can't replace the available lights and this building is huge, with corridors, ramps, lounges. Almost every space has a different colour temperature and the camera will go in the same shot from one space to another.
How about the flickering of the fluorescent light? Is there anyway to avoid or to control it?
Thank you
Florin