Got a similar setup with the same board: 3 disks, one with important stuff (photos, documents), one is a backup with rsync, the third is for downloaded media (not backed up, I don't care if it gets corrupted).
Services: syncthing to sync photos and videos on my phone, SMB, nfs, FTP (accessible from internet), a web file explorer (on docker, exposed to the internet with basic auth), a torrent client (on docker, exposed with basic auth), caddy (for reverse proxy with https).
It's not the fastest you can have, but it works ok for what I need.
I have a separate pi4 box with Kodi from which I can view photos and films on the telly.
Services: syncthing to sync photos and videos on my phone, SMB, nfs, FTP (accessible from internet), a web file explorer (on docker, exposed to the internet with basic auth), a torrent client (on docker, exposed with basic auth), caddy (for reverse proxy with https).
It's not the fastest you can have, but it works ok for what I need.
I have a separate pi4 box with Kodi from which I can view photos and films on the telly.