Hi Jeff and Fazz,Where is the captains chair in this layout? You may be trying to do too much with a small room, if moving the back row off the rear wall and providing adequate reclining room for overflow seating results in the front row being too close and that is where you plan to sit, then maybe you need to assess your priorities.
I’m not sure about the layout of the ceiling Atmos speakers.
The ceiling is 9'. The width is the room is 13', or 156". That leaves 2' of space on either side of the seats to the side walls.I love sitting towards the front at a movie theater and I love big screens but 9 feet seems awfully close for that big of a screen. I would check it to make sure you're not moving your neck to catch all the action. Also, more importantly if I am looking at your diagram correctly, your room looks to be a hundred inchs wide. I don't know if you're going to be able to get a row of four seats in there. Even the seats that I am looking at that are 3 wide are 90 some inches which doesn't leave you a whole lot of room to work with.
Edit: I think I was looking at the 109 in and it looks like 100 in but then you have 13 feet near the screen. Even at 13 feet that only gives you about a foot-and-a-half from the side walls if you do four seats. Also, as others had mentioned I would move the rear seats away from that back wall. I don't think you want your Atmos speakers directly above you like that if you are doing .4. I know their site has the preferred angles of where they should be. I didn't see your height listed anywhere but with that small of a room if you have a standard 8-foot ceiling you need to be careful with your Atmos placement.