This sounds like an extremely ambitious undertaking. I haven’t been keeping up with efforts to crack UHD encryption. That’s doable now?
It’s very doable. MakeMKV can take AACS 2.0 keys manually. I already have the UHD copy ripped. Authoring UHD discs at the consumer level on the other hand is still very tough.
Edit: Although you need a compatible UHD friendly drive.