For me, I really want to get into niri, but the lack of XWayland support scares me (I know there’s solutions, but I don’t understand them yet).
Also, I stopped using Emacs (even though I love its design and philosophy with my whole heart) because it’s very slow, even as a daemon.
There are alternatives if you want to host your calendar and contacts and sync them securely. You could use Radicale and put a reverse proxy in front of it (Nginx Proxy Manager makes it easy to set up and easy to get and renew certificates).