I'm going for 48-hour nights, because from my mafia experience you have a lot to discuss as mafs, especially on the first night. After 24 hours, I'll send out PMs to whoever hasn't sent in their action yet to let them know. If you want the night to end faster, then send in your PM sooner, so we definitely don't have to wait for you especially. Sorry, but being a townie means having to not do stuff at night.
Alongside a QT for discussion from masons/mafia/cult/whatever, I've decided to give everyone a separate quicktopic for their own use (posting theories, asking about night action specifics, listing suspicious behavior for posterity) so if you've got nothing to do overnight you can always reread the thread and overanalyse the living shit out of the other players.
The spread for night actions seems to be quite even between QT and PM, so I'm not going to differentiate either way. You can pick the medium you're most comfortable with, and I'll dutifully check both every night to receive actions. YAY EVERYONE WINS!