I started running NanoClaw on a VPS. Not too concerned about keys because it’s mostly to learn and for fun (for now). I started it on a 10 year old iMac, but moved it because what you said, inevitable hardware failure on an old machine (and no doubt at the worst possible moment). But it actually ran pretty well there.
Why does @npub18m76...q955 show some NIP-05’s as @user with a person/check icon and some as user@dom.com with check badge? Both set up the same way and display the same in other apps like YakiHonne.