I'm uncertain about how to best use our time before a 6-day hiking and biking trip in the Jungfrau with Backroads. We have 2 1/2 days before the trip starts and really only one full day when we're not either arriving or traveling to the trip start point (Kandersteg). The Backroads trip is mountain-focused (staying in Kandersteg (1), Grindelwald (2), and Giessbach (2)). I love the mountains so I could spend more time there, but I wasn't sure if touring some alpine cities might provide a balance. Originally, I thought the best bet was to arrive in Geneva, and either spend a night there or stay the first night in Montreux before spending another night in Bern and traveling on to Kandersteg, However, I'm now thinking the better option might be two nights in Luzern.
Questions: Is it crazy to get off an overnight flight from the US to then take a train to Montreux or Luzern? Should we count on one night in the arrival city? Neither train trip is terribly long. Which of the following is best (or is there something better)?
Option 1
1. Arrive Zurich -> Train to Luzern. 2 nights in Luzern. Explore Lake Luzern, Mount Pilatus.
2. Day 3: Explore Luzern in AM, then train to Kandersteg
Option 2
1. Day 1 - Arrive Zurich -> Train to Luzern. 1 night in Luzern
2. Day 2 - Train to Bern. 1 night in Bern.
3. Day 3- Explore Bern. Train to Kandersteg.
Option 3.
1. Day 1 - Arrive Geneva. Explore Geneva. UN? Night in Geneva.
2. Day 2 - Train to Montreux. Night in Montreux. See Castle de Chillon.
3. Day 3 - Train to Kandersteg
I also considered stops in Chamonix or Zermatt on the way to Kandersteg, but both seem like they will take us out of the way and involve longer travel times. Our Backroads itinerary also excludes Jungfraujoch, but getting there also takes time and retraces steps.
Thanks!