I was running my Celestion's with a 'phantom' center, so ya, I'm going to do the same with the Axiom's and move my Celestion's to the rear. The Onkyo I have is far too old to have rear surrounds, though that was a cool idea. And the sub idea is a good one too... no way I'm dragging my dad's over though, it's massive... though it's a good idea, I'd really like if the pre-outs work... I can just about justify an amp purchase
If only those Emotiva's were cheaper to get into Canada! They are such a great deal in the states.