You might try searching the
Auditioning Axioms in Your Area thread to see if there is a DC owner. I think you should be able to find someone.
Any particular reason on the placement you've chosen like furniture or windows? I sit about 10+ feet back from my speakers, which are spaced about 6-8 ft apart and that works fine for me. I believe there is some guideline that I saw that you should sit back 1.5 times the distance between your l/r speakers. The further you sit back the wider the speakers should be set in order to get proper stereo imaging. Not sure if I got that ratio right though, so you might want to do a search or wait until someone chimes in on the topic.
Can't comment about the 40/50/60 question as I own M22's. Is this just strictly for stereo listening or are you contemplating HT? Any plans for a sub? It can be useful even for stereo in order to get full range sound, although the need for one is highly dependent on your listening preferences (types of music, volume, etc.).
Good luck.
I am sure someone will post soon about the floorstanding speakers.
