Guess condition of the room is mighty rough in these pictures. One thing that was tough in doing the project was working around the garage door overhang.
I decided not to mess with ripping that out and wanted to keep the option of using the garage door, so new inside wall (shown partially done -- 16 feet across) fits underneath the frame and stands about 7 1/2 feet from floor of the pool room. Had to lower ceiling by 1 1/2 feet at that end. Still door can't open further than the edge of the wall because there's insulation up there now.
My wife's been lobbying for a big window in the back wall, which was sheetrocked by a former owner before HIS wife went nuts up there and, I'm told, one day went running screaming down the mountain.
My answer has been "maybe" but I'm really thinking of Gleason's line in "The Hustler" ... "Shut out that goddamned sunlight!"