I think that the jump from AAA to the majors is bigger than ever (from what Law and Fangraphs and MLBTR say), so I think they'll give Lee more time (plus, he's likely the best SS until CC comes back).
I think Julien goes back down as Craig says just above this post.
Martin goes down when CC comes back, unless Lee keeps not hitting (as everyone now thinks Lee is a legit MLB player, and Martin is a utility guy).
Festa is clearly starter 5 unless he blows up, in which case I'm not shocked by any of Matthews, Varland, Boushley getting a spot start.
No idea on the bullpen, but I'd sure like one lefty I trusted....