If this is your first time hosting a public Minecraft server, all I have to say is good luck. And unless your moderators are watching everyone at all times, I would also recommend you get a good rollback plugin (CoreProtect was what I used), and/or just have heavy server-side restrictions as to what blocks people can modify and where.
I hosted a somewhat popular server for a short while, was fun at first but got annoying real quick having to deal with griefers.
- How would floods of people crash your server exactly? I never heard of that being a problem for anyone really.
- Good luck with that request. Can write it in large boldface text and people will still ask.
- Sounds easy unless you come across one of those persistent griefers. Dynamic IPs and VPNs are pretty easily available. I would also hope significantly that you aren’t running with online-mode false; name-spoofing is quite easy too.