Okay, again: The station selector is a priority selector only. For your case of only IR missiles, it will fire the selected station first, then all the others. With only IR missiles attached, you could even place the IR / SARH switch to SARH and still fire all missiles.
The green lights are not working with the R-3 and R-13 series of missiles, only R-55 and R-60.
Regarding the launch lights: The one on the radar will light up when locked onto a target and within launch zone (gap in the horizontal line). The launch light on the ASP will light up on a fixed distance, however I do not know if this is currently working as intended and I would suggest ignoring that one.