I can support what Paraneer and Czarivey have said,
My room is about the same size and I use Arro's with a Storm subwoofer. If you don't listen to bass heavy music (I listen to a lot of Metal), you could probably do without the Storm. Fortunately, I had the occasion to audition all three of those speakers side by side (during a demonstration by Totem's Vince Bruzzese no less) and I preferred the Arros.
I used a Simaudio Moon i-5 with the Arros and it was competent, but they really showed their best when I upped the amplification with my Magnum Dynalab MD-209.