Thank you all very much. 10 inch centers it is and no fill. I do not have pictures anymore of the system and we sold the house months ago. There may still be a picture of it on audioreview.com somewhere from a posting 2-3 years ago... I'll check sometime.
Was on site today really looking at everything and I think it's really going to turn out well. There is partition in the room 30' back with a 10 foot opening for custom 5 foot sliding doors. As I haven't decided on changing the surrounds, the Monolith IIIs will flank this opening giving me about 5 feet from the plane of the Monoliths (well towed in) to the back row of seats (5 large theater seats).
Right now I am really starting to eye those EVO 900 mono blocks for the dipole towers... but 40k is just ridiculous. Just envisioning having them upfront in black flanking the 650mc monos which would then drive the sub towers....
Anyway, I think I'm just going to splurge for the Stage front center and use the Theater as the surround center, from what I hear, the new Xstat panels really help with the dynamic range in small panels. Dreadnaught II is ordered with 3x225 watt channels for Monoliths and (Stage?) and a double channel card (2x100) for the Theater surround center.
Will keep you guys posted.
Best regards,
G