This would be a FIFA style thing, having International Championships and Club Championships.
CLUB
Full Team Name:
City:
Country:
Abbreviation:
Logo:
Colors:
Home Arena Name:
NATIONAL TEAM SIGNUP:
Nation Name:
Abbreviation:
Flag:
Colors:
The schedule would probably end up with the AIHA World Championships around August, Club Season starting in September or October and lasting a while after and all sorts of other International Tournaments during the year.
5 Clubs, 3 National Teams (your country and it's dependencies)
Admins, wait until there are atleast 12 teams before theres a subforum unline the 8 that was suggested.