Hi,
I haven't played multi-player Space Station Assault for a loooong time. I'll see if Darwin has any advice there.
My main advice on Succession is to pre-screen the players. Succession is fairly group-dependent -- if people chuckle at the premise and like an open-ended negotiation game they will probably have a lot of fun, but if they don't like that style of game they won't.
When are you planning the event?
Best,
Chad