Im not sure if youd like my two cents on door construction, but ill put it in for good spirits
not knowing what you wish to use for a reflective surface inside the environment, (sorry if i missed it in my skimming) you could simplify construction by using a single panel , if you do them in a see through manner, what will you use to keep light in the box and reflecting about? guess the main question is. would a 1 way glass help this in any manner?
just curious.
best of luck
SP