I am looking to go back to Sonos with the new Arc Ultra immersive set. I currently have a Samsung q99-B soundbar with rears on stands facing inwards to my sofa. I enclose a photo to show my rear wall and where my existing ones are. The main problem I see is the rear left, right hand side. As the Eras have drivers left and right side, would the doorway]become a problem, as in, would sound just go through the doorway? Or do I mount them flush? Is the Era too close to the corner? Thanks