I know I'm too late, but I might as well post it anyway. I used Armiel's CFE tiptorials and Missroxor's aquarium tutorial. CFE has been used for foundation hight, the roof/ceiling, the stairs and the aquarium. I tried to get the light to flow smooth on the CFE walls, it might have worked best in the hallway. There is Store content, but no CC.
Fake level with loft.