You said you liked the look of wiki.js but didn’t say what you didn’t like (unless I was missed it). Why not just use wiki.js? If you want permissions you’ll likely end up with other features like editing too.
Switched to porkbun as well.
There’s literally compose files in the link you provided. Copy/paste?
Why are you concerned with your database ballooning?
What do you think you’ll be able to do to the database to prevent this?
What do you want to do?
Gandi did something in the last year or two that made me migrate off them. Don’t remember what it was but it was a deal breaker.
Edit: found it further down in the thread. They even migrated to porkbun like I did! https://lemmy.world/comment/8536944