What you have there is a very difficult situation for those speakers. The room is simply too narrow. The only thing I can think of is to move your equipment cabinet to a side wall and move the woofer panels to the inside. That would give you a better soundstage with the position of your listening chair. Something like a 20.7 would work much better in this room. 

Remember your woofer panels cross to the mid range/tweeter panel at 400Hz. In placing the woofer panels back like that you are smearing the lower midrange a very important part of the spectrum. Swapping the panels around would fix that. 

Mike