Firefoot, that was the original plan (I was going to inform the Seer and Werewolves of their roles today at the end of registration). However, as I'm (probably) away on Sunday I don't think this would work, as it would give the wolves too much time to debate.
So: The game will start with a Night at about 6pm GMT on Monday (normal, specified time). The Night will probably be very short, as the only PM i will need will be one from the Seer, which shouldn't take very long to decide, especially if they are online when they receive their role at 4pm.
Well, that's sorted.