John, my dedicated listening room is about the same size as yours....in most parts of the world it would be considered a closet
Not here in S.Calif for some reason..
Anyhow, to get to your question
, I had experimented with various speakers in this room prior to my acquisition of my SF's. I had inserted large Hales, Maggies, Quads, Magicos and Focals and realized that the floor standers were typically not the best match for the room size. The amount of real estate that we have available dictates the placement of the speakers and if nothing else, the floor standers which are usually larger, did not leave enough rear space to the back wall to allow for much depth reproduction.
IF you like a larger sense of space and a bigger rendition of the stage (like I do), then you will need to separate the speakers as much as possible, not just from themselves, but IMO from all walls. As i posted in another thread, the 'art' of this hobby is to seemingly match your speakers to your room......i.e. "horses for courses" which is very much more difficult than most people would realize. At least, IMHO.
I would therefore recommend that you try a 'bookshelf' size speaker or a stand mount speaker, and see if it gives you the results that you are hoping for. In my instance, that was the way to go
.
I also agree within what Amir said above....Not necessarily 2-4 subs as this could overload the room, but in my instance at least one(1) sub.