I have no idea on stats to be honest. It might be worth asking on the main Artemis forums as I think there are a couple of people out there who have done the research.
As for having a second big server, that would be awesome. We’d more easily run two large games parallel to one another which will be cool. It also gives us a back up if the main goes down.
As long as you are happy to do it! The contribution is appreciated by all I am sure!