Been using option 3 but with Bitwarden for almost 5 years at this point. First started out on a VM in a cloud provider. Now it’s in a VM on unraid behind a local HAProxy or Cloudflare tunnel for remote access.
Bitwardens full docker stack provides great daily backups which I’ve had to restore on occasion or go back to one from months ago to dig out a password for my wife.
Been testing and hoping to move to the unified-container from them soon, assuming I can replicate encrypted backups like their solution.