Thanks Heartless and thanks for unwrapping the couch! I have a confession to make. 
I just found good models that were uv’d already and imported then let Unreal generate the lightmap! LOL Seemed to work for the most part.
The OP’s scene is looking good! For your recessed ceiling lights you could try and make a piece of geometry that is about 6 inches wide and floats inside the coffered ceiling, make it emissive and hide in game. Make sure the emissive lights your coffers.