Your seat configuration isn't perfect, but you are trying to put a lot of seating positions in the room, and I understand that if you often have big parties to watch movies. Just realize that some of the seats won't be in the position for the optimal surround sound experience.
One other big kicker is getting a projector that can produce enough light on a screen that large. Do you have a projector in mind? I assume this will be a completely pitch black room.
7.4.4 Theater Room: JVC-RS500, Silver Ticket AT 2.35:1 142”, Onkyo RZ830, Anthem PVA-7, Panasonic UB420, Apple TV 4K, JBL Studio 530’s, 4 - 15" DIY Sealed Subs
3.1 Living Room: Samsung 64” F8500 Plasma, Anthem MRX 300, Dynaudio Audience 52’s, Dynaudio Audience 122C, NHT SubOne, Roku Express (2019)