I run almost exactly the same thing. Plex running in Proxmox VM with a GPU passthrough, and an OMV instance in Proxmox VM hosting all the data shares. Proxmox also hosts multiple Docker stacks for various instances. This is spread out over multiple bare metal boxes.
I pay for Youtube premium as a carry-over from Google Music (back when it was called Youtube Red). I let it run because I enjoy the screen off feature when I’m driving. On my desktop uBlock Origin still blocks 340 scripts/trackers even when logged into Premium. They not only want to eye-rape us with ads, but they want to track the fuck out of us across the web.