I had a similar challenge many years ago. Below are a couple of old photos from 10 years ago. Since then we've upgraded to the Definitive Technology Pro Monitor 1000's (LR), 2000 (center) and 800 (surrounds) with a SuperCube III. It has worked very well for us. If you need more pictures or have any questions let me know.
I found some more recent pictures of my Definitive Technology setup in case that helps at all.
Center (PM 2000) and front left (PM 1000)
Center and front right (decent view of the mounts)