I was at Hell's Belles on Saturday and, had I not been seated dead center with three or four people on either side, I would have walked about 10 minutes in. But that's just me.
If the midpoint of your trifecta can be a little flexible time-wise, you could take in Naked Boys Singing (6pm Saturday, 1 hour) or Sistas (430 Saturday, about an hour and a half). Both are great fun! If you want something a little more thought-provoking, I really enjoyed Joe Assadourian's The Bullpen (Saturday at 4, just over an hour).
Have a safe, enjoyable trip!