Could anyone offer suggestions on lighting a 15'x30' room with a 14' ceiling. The walls and ceiling are painted light brown, the floor is unpainted concrete. The area is going to be used as an auto detail bay, owner wants to have "alot" of light and something that is efficient. I realize that what he wants is pretty vague, but would something like a couple of 400w HID fixtures suffice? Anyone with lighting knowledge please chime in . Local supply house people are saying 8'HO florescents, owner doesn't want to be dealing with flor tubes. Thanks.