Best pass: RT Zurich-Gimmelwald + Berner Oberland

Hi,
I will be traveling alone in Switzerland as follows from Sept 2 to Sept 7:
- Sept 2: Public transportation from Zurich airport to Gimmelwald. (I will stay overnight in Gimmelwald the nights of Sept 2 to Sept 5.)
- Sept 2 to 6: Various trains, cable cars, lifts, funiculars, buses to get to mountain views in the Berner Oberland, such as train to Kleine Scheidegg and gondola to Mannlichen. Also in Berner Oberland I may take public transportation to beginning points of hikes/bike rides, or from end points of hikes/bike rides.
- Sept 6: Public transportation from Gimmelwald back to hotel around Zurich (don't know which hotel yet)
- Sept 7: Travel from Zurich-area hotel to Zurich airport

What would be the best travel pass or passes to buy for this travel on these dates? Thanks! :-)