You say you’ve spent a lot of time reading the Forum and learning from the great knowledge contained therein. But what exactly have you learned?
Let’s say the Nova costs £1,500 and contains three parts - the streamer and Dac, the preamp and the power amp. Let’s say each costs £1,500 for convenience.
From your learning, what have you learned about whether pairing a £1,500 source with £12,000 speakers is a good idea?
Have you learned anything from reading the various posts by people dissatisfied with their large expensive speakers and inadequate electronics?
Did you learn of system automation, which allows total system control from your phone or a single remote?
Did you learn that it’s sensible to get the basic system components right before splashing out on expensive feet and fancy mains leads?
Have you learned about the effectiveness of a good stand and a decent mains supply?
The Sonus Fabers look fantastic, are beautifully made and I’m sure sound lovely. By all means get them if it makes you happy, but bear in mind that a well matched system to go with them is an NDX2 with 555PS, a 252 with Supercap, and a NAP 300. That’s about £30,000 of electronics. Fronting speakers like this with a Nova and 250 is frankly daft.
I’d look again at the route suggested by others - an NDX2, 282, Hicap DR and your 250 with the Kantas. Or, if you like the Sonus Faber looks and sound, swap the Kanta for some Olympica Nova 1 stand mounts. That would make a lovely system.
As @Mike_S correctly says above, you can feed the TV into the NDX2 using optical, and you can connect the NDX2 and 282 through system automation and control it with the NDX2 remote.
The NDX2, 282, 250, Nova 1 is an infinitely better balanced setup than the Nova, 250, Nova 3 system and I’d suggest it’s worth doing a comparison of the two approaches.