Yes I know my tv is in a weird position hanging on top of a bed due to setup of room.

I currently have the Era 100s setup as surrounds facing directly towards me which is my main listening position which is the chair. I am going to upgrade to era 300s mainly for Dolby atmos and an overall better surround sound experience. What would be the ideal placement for the era 300s as wall mounts preferably (or maybe even speaker stands too if that’s a better option for my room)? I have a pic of my current surround setup of my room below with about 1m space left behind my chair (MLP).
Current setup is ARC+Submini+2xEra100.