A Frame Only Pony Wall the same height as the Base + Flooring and a Custom Moulding will achieve this it looks like   If the inset is the Tradition Black (Shadow Detail) you could make the Custom Base as two pieces instead , here It is just one.....   ......... try this moulding...set Pony wall to 6 15/16"                    Shadow Detail Base 6inch.calibz   the Door Trim will be a lot trickier I think.....   can't believe this is making a comeback.....