Brad,Chris sent me a link to the latest in-wall line arrays from B-G. You should look up this URL:
http://www.bgcorp.com/productLine.php?id=16
The Radia R-600 uses Neo 10 and 3 drivers. These models are sold through dealers and as a finished product likely are not cheap but you can do the leg work to ascertain the numbers.
Speakercraft sells several models of in-wall line arrays including the Starlet series at:
http://www.speakercraft.com/our_products/starlet/index.htm
The near/far field stuff is in my white paper linked below. You should strive to place as much of your room into the near field as reasonable.
Jim