Are you planning on releasing the UE4 project to the public? Or only builds? I'd love to play around with it in the editor if possible!
Please make the second floor..!! and if you've done it please tell me where can I find it...??!
NoBrandStudio has a nice material set for 3ds Max users. The pack features 20 different Vray Shaders, including textures, lights, cameras and render setups. The entire scene is ready-to-render.
All the materials are easy to edit, bitmaps included. What you get is a Max file compatible with AfterEffects, C4D and Sketchup, including .obj .fbx & .mat formats.
You can get a regular license for $20 or an extended one for $45.