I've decided to run it after Catacombs release because:
1.) There's already a ML rush running
2.) We will probably have more people joining after Catacombs.
Will post dates etc when I know when Catacombs is released (was told 25th but I heard that might not be true).
So hurry up with leveling those Bainshees and Vampiirs after Catacombs is released!