IMO skip the TV and go projector/screen.
My setup:
Audio:
Pioneer Elite 9 channel Atmos receiver.
7.2.4 Onyx/Polk/SVS(subs) setup.
Emotiva power amps.
Video:
Big Epson 1080 projector (replacing with 4k soon)
120" Elite screen.
Sound/light control:
Homemade soundtraps
Blackening materials on...