It will really ultimately come down to just how much low end info you want. My demo area is larger than your room, and I have no issues making Perspectives work great. Of course as mentioned, the Perspective is really more of a large mid size speaker, so the overall bass impact will not be quite as much as a larger speaker with larger drivers.
All in all, the Perspectives are fantastic speakers, and likely would do well in your room. Add a sub or two if you want/need the really low stuff.
Taylor
www.goldprintaudio.com (Joseph dealer)