Have you looked into projectors? That wall would be an excellent candidate for a 140 inch screen! \:D

But if light is an issue then at least a 65 inch LCD needs to be hanging up there. I'm just saying, if you got it, flaunt it. ;\)

My Stuff :

M80's
QS8's
VP150
EP800
Denon 4802
Emotiva XPA-3
Samsung BD-P3600
Sharp 65 Inch Aquos LCD