Unusual Room - Need advice for soundbar or traditional speaker setup

[Qaenos]

Unfortunately, I have my 65" tv in an "open concept" room that combines the living room, kitchen, and dining room. A picture is attached.

I'm looking to buy either a soundbar or a dedicated speaker system, but need recommendations. The wife is resisting putting rear speakers behind the couch, because she doesn't like cables...but if that's really the only way I will be happy with the sound, then I will force the issue. Hanging rear speakers from the ceiling may be an option, but again - I have to push the issue with the wife.

I'd like to spend as little as possible, but I don't want great sound. I'm willing to drop up to $2000 USD if necessary and I'd like to take advantage of Black Friday sales.