The sofa design was given by my architect. But it's a plan. I am concerned about it's elevation for a contemporary look, what should the seating height, sofa back height, clearance below the sofa . As u can see the TV unit height also mentioned which is arround 18" from the floor surface. FYI: the living space is not very large (pics attached) I prefer the sofa in the 3d design photo rather than the plan given.