As already mentioned, a clan server would be very good for trining etc.
I maybe have a solution. The problem is, that our own created servers are too slow in the internet. So the ping is too high and no real play is possible. But I know a programm called Hamachi, which imitates a network in the internet, so that we play by internet but it is as if we would play in a LAN. You could download this program (it's freeware) and we could try out, how good the pings are. I hope that they are far better that the normal ones.
Rata