Good effort! Although you can't please everyone.
I think you should mention cost. The rectangle is about 20m x 16m = 320m2 or about 10,7m2/person. And the ceiling is about 3.5m.
I think you should mention cost. The rectangle is about 20m x 16m = 320m2 or about 10,7m2/person. And the ceiling is about 3.5m.