Speakers in rear with TV in front. Will it work?

No, it wouldn't sound right. Why don't you just get the wall-mounting bracket kit for the TV and mount it slightly above the speakers? I would think that would work much better.

Plato, The K-horns and Subwoofer are stacked six feet high with a seven and a half foot ceiling.

Elizabeth, I do have an extra pair of Cornwall Speakers, with the same drivers as the K-horns, but without the K-horn bass. I could use the Cornwalls with the TV at the opposite end of the room. Since the subwoofers in the rear are omnidirectional, they could supplement the bass of the Cornwall speakers next to the TV. An extra Mark Levinson Amp in storage could drive the Cornwalls. I will have to get a platform that pivots 180 degrees in order to switch from stereo listening mode to TV watching mode. Perhaps it would be more practical to get another chair and put the two chairs back to back. The room is 19 feet long NOT including the space taken up by the K-horns and Subwoofers. This would put the sweetspots for the TV and the stereo at about nine feet. Perfect! Thanks for you idea Elizabeth.

Could you get a projector along with a pull down perforated scre en that allows audio to pass through? You could do a pretty awesome setup for $2000 and your large sound would match the large image. As long as you can control lighting your all set. Those of us with projectors in our systems can verify its awesome for concerts or any material and surprisingly cheap. If you need any ideas let me know.