There really isn’t an ideal spot for surrounds given your room layout.  The surround speakers are there to play audio that is to the left and right rear of the seating area.  No matter where you place these speakers, audio will be coming from the wrong location for half the seating area.  You could either go without and use the play:1s elsewhere, place them at A and Co and just accept it as best you can do, or pick one of the sofas as the primary listening area and place surrounds to the left and right of that.  The last option may be the best choice, but would still be off since it’s not lined up to TV/soundbar.  Maybe experiment and see what you like best.

I too have no place to properly place my surrounds, still I thought I’d give them a try and see if a bad location sounded better than no surrounds. I’m happy with the sound, it is not really too odd sounding so I’d say try it.

Looking at your room I’d think on either side or above the double doors might work out.

I am also Lack a suitable position for my surround speakers, but I decided to test them anyway to see if they would sound any better than they would without them. I like the tone, and it doesn't sound too strange, so you should give it a try. On either side of the double doorways or above them, depending on how your space is configured, might work.