Hi,
Sorry, got busy with other stuff and I just got back to this thread.
Oh, by the way, the "v3" with the M80s WAS a typo!
The M22s only need a couple of inches behind the port. Given the new room size, I think you'd find them really excellent with either the EP350 v3 or the EP500 subwoofer.
One of the virtues of using smaller speakers like the M22s for mains is that they're easier to set up in more confined spaces to get a really excellent stereo soundstage than are the M80s.
Arcam amplifiers are fine and they will drive 4-ohm loads if you decide you'd prefer the M80s.
Regards,
Alan
