Hard floors are desireable in a recording room. They add to the sound of many instruments. They will add to the sound of your speakers in the same way.
Mitigate this with a large cloud.
Your room is small. The Back Wall may well be your biggest problem. http://recording.org/studio-construc...en-matter.html
Particularly if that wall is hard, it would be worth treating the whole wall aggressively. You can generally install diffusors in front of such Bass Trapping.
Space Arrays are good at short range. Depending on where you are, shipping, availability, I expect Jens' diffusors to be great.