Hey, it's exiting give you my design proposal because i think it will be a great option for you.
The project use an atmosphere industrial and introduced some elements like exposed wooden beams with black color, brick wall only in some walls, steel black windows like a factory, also hanging lamps and some furniture wich complements the atmosphere.
The cover has slope to the center but exist a small wall wich hidden it. It is intentional to preserve an industrial atmosphere.
The mix between steel, brick, wood and gray-withe colors makes a new space.
I want to add the skp model because i see that you know about the software and it will be more easy for you.