Village: The four KPN -Kills per night- from the Cult, Red/Black Mafias and the Killer will almost certainly overlap at some point. The Vigilante has a high chance of getting a good kill around the second night, so kill then.
Black Mafia: You are more hidden. Your Godfather allows one of you to get cleared by a Cop. It is recommended he doesn't vote to kill, so he can't be caught be the Tracker or Watcher either. If you think the Stalker is more important, have him not vote to kill and claim a Pr like Doc/Shrink.
Red Mafia: You're not hidden, but you can hurt the town more. The hooker can stop PRs and the Framer can mess with the Cop. Your Nilla is expendable, so don't be afraid to lose him.
Cult: You don't really have to worry about the Masons to much. If you recruit one, then you can keep them contained.

Killer: The high KPN is very useful to you. You can either go alone, joint with a one man mafia, or get shrinked to join the Town. You actually have a good chance at winning with all your options.