Assistance to place my Focal 1007 BE

Hi all, I have a narrow apartment, 4meters wide and about 8 meters long, but there is a stair well that goes down and also a small kitchen.

At one end is glass windows, covered by blinds

i have placed my speakers on their stands on one of the long walls (the wall that houses the stair well)

Can someone assist in telling me how far apart each speaker should be from rear wall, side wall and each other? Unforunately there isnt much room between the speakers and I when im on the couch (which is also hard against the rear wall)

The listening area would be about 6x4meters

Thanks