Thank you all for the replies.

WhatFurrer - Since the wires are in the ceiling, I would prefer to mount the speakers on the ceiling instead of the wall. What is the advantage of mounting on the walls compared to the ceiling?

jbzngowest - The reason the TV is in the corner is so that my wife can watch it from the kitchen. As for the sub being behind the TV, will it cause any problems as it is close to the TV?

jakewash - This sounds very encouraging as you have a very similar setup that I am considering except for the QS8s. My main concern with the proposed setup is that the 6th channel is directly above the viewer while it is suggested to be behind the viewer. Also the side sorrounds are supposed to be on the side while it is slightly forward to the viewer. BTW, what sub do you use and where did you place it?

Thanks again,

Raj