aramar wrote:
Unfortunately I don't have enough space on either wall as the area
next to the TV is all glass shelving and glass doors floor to ceiling.
Beyond that the distance from the TV is too great.

What about using two surround sound speakers side by side under the
TV. Two of these would fit to give me stereo sound instead of mono
from the center channel. Would this be better?

When speakers are that close, the sound is mono, regardless. Center channel
speakers tend to be more robust and have directivity that is more optimal
for an application like this one.

Another option is ceiling installed speakers.

That would have some romance to it.

I could go that route
and keep the center channel under the TV.

Agreed.

I see that Klipsch has ceiling speakers with directional tweeters (no
idea how well this
would work).

Ceiling speakers wouldn't have to be restricted to just speakers mounted in
the ceiling. They could be more conventional speakers facing the listeners,
suspended just below the ceiling.