Well, since no one else has offered to step up to GM, guess it's me then :)
How do you feel about playing through the already published stuff? I was thinking of starting with Broken Chains, since it gives a nice reason to have the players work together.
Next up, characters. From what I can see, having a variety of skills is going to be a good thing (1 Heretek, 1 psyker, 1 social type etc). I'm not saying there must be a balanced group, but it does seem to make things easier to work with. What do people want to play?