Should I upgrade my Sony STR-DH770 given my current set up?

[Abdrewes]

Hello I'm shopping for a new TV this month and I'm wondering whether to set my sights on Dolby Vision or not. Currently, I only watch my 4ks when I visit my brother (85" QLED), but I'd like to have my own HDR set up (obviously) as my 4k collection has grown to 700+. My TV budget is tight ($1000 or so) given that I'm supporting my wife through her doctorate program for the next two years.

I'm leaning toward a TV with great tone mapping already so I don't have to upgrade my receiver and player. I'm perfectly happy with the sound as well, though I'd listen to suggestions given that I'm only using 5.1 out of a 7.2 set up.

Here's the equipment that I'll be attaching to the new TV:

TV: LG 55UF6450
Player: LG UBK80 (HDR10 only)
Sony STR-DH770 (HDR10 only I think)
Front: Klipsch R-26F
Center: Klipsch R-25C
Rear: Klipsch R-14M
Sub: Klipsch R-10SW