Hello,
There’s nothing wrong with stereo tv, but if you’re thinking of going 3.1 I would recommend a Beolab 7.4 for the centre.
The 7.1 is a glorious speaker on its own, but might sound a bit muddling with the BL8000s as buddies.
(BL7.4 is mono, clear, fabulous. BL 7.1 is stereo, musical and ace on it’s own.)