Room size isn't the determinant; seating location is. Irrespective of room size, if your seating area is away from the back wall (like yours is), then you're a good candidate for a 7.1-speaker layout.
Yes, if you want to have an effective 7.1 layout. You'll need to move your side speakers forward, so they're directly to your sides, and spread the rear speakers out behind you. The goal is to have clear rear vs side separation in the surround field, which you're not going to get by having all four surround speakers behind the listening area.
Sanjay
Room size isn't the determinant; seating location is. Irrespective of room size, if your seating area is away from the back wall (like yours is), then you're a good candidate for a 7.1-speaker layout.
Yes, if you want to have an effective 7.1 layout. You'll need to move your side speakers forward, so they're directly to your sides, and spread the rear speakers out behind you. The goal is to have clear rear vs side separation in the surround field, which you're not going to get by having all four surround speakers behind the listening area.
Sanjay