Originally Posted by shuigao

Take the cable car up to Maanlichen and sled back down to Grindelwald.

Since you'll be in that area anyway are you not planning to go up to Jungfraujoch?

Anyway last summer I did a 10-day trip, video/itinerary below if you're interested in a first-timer, non-expert's experience. About the only thing I'd change is to either do Jungfraujoch or Mont Blanc / Chamonix, but not both in the same trip.

https://www.youtube.com/watch?v=otXOMWfHFEg