8 days trip in Swiss, which Pass should I buy?

Hi,

I am planning a 8 days trip with my wife to Swiss. Our itinerary as under:

1. Geneva > Montreux

2. Montreux –> Lavaux –> Zermatt –> Gornergrat –> Rotenboden –> walk to Riffelsee lake –> walk to Rotenboden

3. Zermatt –> klein Matterhorn–> Furi walk to Zermatt

4. Train from Zermatt –> Interlaken (via Visp, Spiez) –> Grindelwald –>Bort–>First then walk to Bachalpsee Lake, return to First —> Bort walk to Grindelwald –> Back to Interlaken by train

5. Train from Interlaken –> Grindelwald –> Kleine Schedegg–> Jungfraujoch –> Kleine Schedegg –> Wengernalp –> Wengen –> Lauterbrunnen–> Interlaken.

6. Train from Interlaken –> Lauterbrunnen, take bus to Stechelberg, cable car to Murren. Murren walk to Gimmelwald, cable car to Stechelberg, walk to Trummelbachfalle, take bus to Lauterbrunnen，take train to Interlaken.

7. Train from Interlaken –> Frutigen, take bus to Blausee –> back to Interlaken –> Golden Pass Line to Luzern.

8. Train from Luzern –> Bellinzona –> Capolago Riva S. Vitale to Monte
Generaso –> Back to Luzern

9. Luzern –> Cruise to Viznao –> train to (Rigi) –> Viznao —> Luzern. Take direct train to Mila

We are first time to Europe. Really hope that you can help to guide us.

Thanks a lot!