Honestly all of the tools you mention have a personal feel to them and might be better suited to be run from home.

Get a NUC or some other small form factor PC, throw k3s on it, and go from there.

Other than the occasional downtime depending on your home network, is there any other reason you would want to host it in the cloud?

I have been running all the tools you've mentioned (minus a nostr relay, which should be coming soon) out of my apartment and have been happy with it.

For your lightning node just run it behind tor and connect to it via Zeus remotely. Or set up wireguard. Everything else you might want publicly accessible just put a reverse proxy in front of and NAT to the proxy. Use dynamic DNS and never worry about IPs.