Multiple Video project with voice narration in Storyline 360

Hello everyone. I wanted to see if I could get some help on a project I am working on. My concept is using multiple preview videos with an audio voice over in the background (narration). I would like the videos to change everyone so often without user clicks. I would like to add text call out's on random slides as overlays without having to stop the videos or voice over. I would like the project to be a complete timeline without interruptions. Is this doable? Any help is appreciated by the community! Thanks a bunch