Mostly sounds good. The only thing I question is how your GF already had control of Lita. It's certainly possible -- with the Priest engaged with you, she moves to the parlor (1), parleys (2), and comes back with her (3). But that's the only thing that stands out. Lita being present with Roland's .38 is definitely a powerful combination.
That's the way we did it in our last runthrough of scenario 1.