<<< >> Double RR ... best-of-three
matches to settle 1-2, 3-4,
and 5-6.
That
sounds like a pretty good scheme, but with six teams
in each division, you could potentially play the
same team
five times during the tournament, and
familiarity breeds
contempt. >>>
Since
you need to provide two more games after the double
round-robin, you could have a double-elimination playoff
instead. This would take a bit longer, though.