From what I've heard the best option for deleting your data from brokers is: https://easyoptouts.com/
This is just run by two honest dudes and is considerably cheaper than the other services. The reason I like this one (though not used as I don't live in the US, is because these guys are quite transparent about the process.) I've heard numerous podcasts where these guys come into the show and talk about their work. As an example they were on the Firewalls don't stop dragon podcast. I would at least have a look at this service and compare with the rest.
VLANs for the win! Was a difficult process for me too when i first setup my Omada stack, but got there in the end. Very nice to have it sorted. While you're at it, you might want to look into having a seperate wifi for guests! I at least have a very limited guest wifi, with a QR code guests can scan when they come in to my house - neat little thing for them, plus i dont have to worry about their devices on my network.
Not sure myself. Was looking at both options myself but NTFY seemed to have broader support and thats why i went with it. Though i cannot back that claim up, simply from my first impression. If Gotify works well for you then I wouldn't worry about changing it.
I just got my notification system up and running yesterday actually! Although I went with NTFY. Because I use Proton I cannot use that for notifications, plus I'd like to keep my Homelab separated. NTFY is quite well documented and works with almost any service you throw at it, highly recommend this! ✨
Are you planning on adding support for Premiuimize and Torbox? A lot of people just left Real Debrid (and all other French hosted services) due to France kicking down on piracy. Real Debrid just recently announced they would start to block piracy related content at least.
What mini rack did you go for? Am looking to do the same.