WOW that's a long time
have you actually tested it to see if it'll hold us?
I originally planned on hosting it on my desktop, which can easily hold well over 500 people. (I never tested that ever) (it doesn't take a lot to host server, just need CPU power, I have seen a laptop host with around 7-10 people)
See that sentry over there? It can shoot 5,400 arrows a minute! That is one of the only things that have ever lagged my desktop.
~ĘDIT I'm using some old server to host, for security. I am planning on doing upgrades over time.