I can see how you came up 1 straight short for the passenger train. The timer should do it for you. Azatrax uses a five second delay for their exhibit controller.
Forum member Dale H. does a lot of this type of control. email him if you get stuck. Automating a passing siding.
I have trouble determining if those timers are set up for always on and timed off or always off and timed on.
They don't do a good job of explaining that stuff in the listings.