I just thought I'd chime in with a comment:
I strongly recommend having no more players than 5 total per game (1 veteran + 4 learners), and 4 per game is better in many ways (1 veteran + 3 learners).
I know it's tempting to have as many players as possible, but in my experience, once you get to six players, co-ordinating the game, getting any team atmosphere going, etc etc, just becomes too difficult. With 4-5 players total, you can get a nice team atmosphere, and each player learns alot. With more players than that it just takes too long for the game to cycle round the roster, and player interest will dwindle.
-Sirp.