You could try working with what you have. I also have a 2.1-channel set up in a 10x10x8 foot room. It sounds very different - and very good in its own way.

My listening spaces are studies in contrast. Near-field with my Audiobytes, far-field and reflective with my Axiom home theater and intimate and absorptive with my Totems.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated