"Chances" are a lot better if you come in with a good IFR scan and have your flows down before the first sim.
I'm just gonna throw out a recommendation. MS flight simulator is 10 bucks for an old version, another 15 for a joystick. Have your buddy sit next to you and watch you to make sure you are up to PTS standards and that you're doing it all by the book.
I like the SBA ILS for practice, no vectors just keep switching frequencies.