Well done. I recently put up over 17 feet long x 4 feet wide 4 inch thick ( 1/16 inch steel, 4 inch spray hard foam the another 1/16 inch steel) on my ceiling. The drywall lift strained a bit to get them up, sagged on each end so a combo bottle jack on each end took the sag out so the tongue and groove panels would fit together. The bright white steel helps in the room.
I admire your work. Will be a fine building when done.