If running wires isn't an option, Rocketfish makes a wireless solution: https://www.rocketfishproducts.com/pdp/RF-WHTIB/8275528
I have and use this and it has been bulletproof.
If you redeem in the Sony store, Sony grants UHD rights in your UV account (even though the only way to currently view them in UHD right now is on a Sony TV). Here's an excellent spreadsheet which may interest you on this subject...
Yeah, it's the streaming equivalent of buying a 4k disc and not having a 4k player available to play it. Getting UHD rights is just an effort to future-proof.
FYI, if redeemed on Flixster, I can confirm that you do indeed receive UHD rights in your UV locker for John Wick.
When I redeemed, Flixster returned an error message instead of a confirmation but when I logged in to myuv.com it did show as SD,HD,UHD.