Your room looks Beautiful Larry, You must feel proud when people see it!
I think you'll be amazed at the difference the door will make in your soundproofing efforts, I know in my last theater once the doors were in It made a night and day difference with sound propagating out the door up the stairwell and throughout the house.
Its difficult to build a room that can "contain" a zillion watts of LF, but from another angle, the effort you put into:
Originally Posted by Larry M
" meticulous sealing all openings, adding mass, staggered studs, adding extra gg, sealing boxes, etc etc etc"
still goes along way towards lowering the noise floor "in" the room, which is really why we do any soundproofing in the first place.
Even if you still hear the occasional footfall impact from above, Your efforts were likely successful in greatly reducing the typical everyday airborne mid and high frequency noises that drive you to turn the volume up in most residential spaces, Car horns, neighbors dog barking.. kids yelling.. wife yelling.. wife barking ....
etc.. The dialogue will be much clearer at lower playback levels, so by no means were the efforts "wasted".
Again Congrats! You have a really Cool room where you can stand and enjoy a movie!
LOL.. When do you get your chairs?