I'm going to be mounting a plasma and front three channels this weekend and could use some free advice. My basement wall is 7' high so placing the tv in the middle with the top about 58" off the floor. How much space would you leave between the speakers and the tvand how high off the ground for the right and left channels? I am thinking that the center channel would be mounted below the tv. My wife and I are both 5'4" so our ear level is about 40".

Thanks!