Oh man all that space and you go for a soundbar!
Meanwhile, I've just moved in to a new place and trying to sandwich in my 3.0 system, currently looking like this:
disclaimer, temporary setup, please refrain from cable management abuse and the dust on top of the sky box
There is a sill under the window on the right but it's not deep enough for my speakers. And to the left of the chimney breast will be too far left for the left speaker. So I'm pretty stuck at the moment. I'm going to have a custom unit built into the space in the corner there, but getting decent L+R positioning is going to be tricky. Wall mounting would be the best bet I think, but wife has vetoed.
Any inspiration would be welcome.