room setup suggesion needed

I guess it depends. But if you start with a recommended configuration, I would say a small spaces are much harder. You have wall reflections on all sides (including behind the listeners head) to worry about… bass reinforcement you may not be able to fix, except by tube traps, lack of abolition to get enough space behind the speakers… etc.

All speakers are different, all rooms and furnishings are different, as are components driving the speakers. What you get is a nearly infinite variability. Hence there are some standard starting positions for each of the position variables. The listening triangles cannot be too large or the stereo effect begins to disappear, bass reinforcement from distance from back and side walls, and how direct the tweeters point at your ears effects the soundstage profoundly as tweeters are very directional with sound dropping off, off axis. Slow methodical experimentation required.

Typically lots of experimentation is the key. 
 

If I understand your setup. I would try a smaller triangle 6 - 8’ between speakers. Out from the wall a couple feet (wall to back of speaker) or more. Best if there is nothing between the speakers other than dampened wall. The toe in must be experimented with to get optimal wide sound stage without loosing a powerful central image. That takes experimentation. My speaker manufacturer recommends crossing the beams behind the listener’s position. In my room, they sound best with no toe-in. 
 

If you are not used to hearing differences, it can be best to leave it in one position for a month… then try moving… and leave in the better position. Wait another couple weeks… really get to know the sound / soundstage. Distance from wall / inter speaker distance first, then toe in.