Instead of putting the L-C-Rs in the ceiling (which I think would create onscreen localization problems), how about the very unobtrusive Mirage Unitheater? It would only need about 6" between the bottom of your Sony and the top of the fireplace mantel. At 4.6" deep it's as shallow as a flat panel TV. You could then get ceiling speakers for the surrounds, or just get a second Unitheater to mount at the junction of the rear wall and ceiling. It's illustrated in the brochure.
I have some Mirage Omnisat satellites that use the same drivers, and they are fantastic at creating a seamless soundfield while maintaining excellent linearity and clarity. Their matching subs integrate very well with their sats, and perform really well at their size and price. I think list price for two Unitheaters and a matching sub come in right at your budget.
I have some Mirage Omnisat satellites that use the same drivers, and they are fantastic at creating a seamless soundfield while maintaining excellent linearity and clarity. Their matching subs integrate very well with their sats, and perform really well at their size and price. I think list price for two Unitheaters and a matching sub come in right at your budget.