Have you heard of https://www.platinumservermanagement.com? I just found out about them and they look pretty solid. I'm not affiliated with them in any way, but they offer a service for US$30/month which looks pretty comprehensive. It might suit your needs.
I need this as well, I have just discovered these Droplets and I've set up a few and they look good, but I have questions around the security and what I need to do to lock them down myself.