Hello Akiraawr
I think, a Saver Day Pass for Zurich to Interlaken, a Jungfrau Pass for your stay in Interlaken, and Supersaver ticket (or a Saver Day Pass) for the way back could be a good combination.
You do not say much about your travel group (who & age).
May I ask why you plan to stay in Zurich? A train to Lucerne with an overnight in Lucerne, then Lucerne Interlaken Express to Interlaken would be a more scenic trip. And Lucerne is a gem, in all regards.
Kind regards,
Roland