This is similar to what I do, though with Synology Hyperbackup (to Herzner S3 storage).

I run UptimeKuma for monitoring a couple of things, but honestly, I’m pretty much my only user and my homelab is independent of the regular home network, so I don’t really care too much. I’ve been considering some simple log monitoring… when I get around to it :-)

Same here, though I’d be suprised if there wasn’t a plugin for Obsidian which would provide Gantt charts, Kanban, etc.

I use Obsidian for documentation and such Vikunja for task management (Kanban).