Or very strong password

Well, you might have only 1 main client, but if that hardware fails and need to connect from a temporary client or after a fresh install you’re out of your own server…

Regarding SSH Keys, I was wondering how you keep your key safe and potentially usable from another client?

Fixes IP for me, but I admit I don’t have a lot of services to access to like OP does

localhost

Why: for privacy/anonymity concerns