Man, you are confusing me with facts...
Ok, I am not as technical as you, after all you do this for a living. Yes, keeping the surround speakers at ear level was an issue, especially since I couldn't find walls at the right places. Ceiling mounting was the only choice. Therefore I mounted all the four surround speakers on the ceiling, but angled the di-pole speakers so that the null spot points to the loveseat right in front of the TV. Given the room shape, I didn't have any other choice. BTW, in the new HTS room, all viewers will be sitting in the same horizontal line.
Calibration was my next problem, initially I thought of spending hours of time at it with a sound level meter which I planned to bring from US. Then I got practical and used the following feature from Yamaha A/V Receiver.
