Lucas said it nicely, but I'll be more blunt.
I'd reverse your trip.
Regarding schedule issues - check the timetable to understand the excelent train options before you consider any kind of flight within Switzerland. It is a tiny country, with frequent excellent train service.
In late October, and definitely in November, much of the Jungfrau region is shut down....between seasons. That is most true for the Alpine regions. High altitudes are colder. Cities at lower altitudes such as Luzern are still going at full strength. . You'll probably be there early enough to be OK...some hotels may be closed...but you have much better chance to enjoy the trip if you go first to the Jungfrau region. By the end of October, you may find snow blocking the higher trails (or may not) but the skiing will not yet be good enough to attract many customers. If I recall correctly, many of the cableways shut down at approx October 25th for a month or more. No customers; maintenance time.
And, Luzern is definitely a city, but has a lot of "nature" visible and close by. A lake boat ride is worth considering.Mountains nearby. See attached photos.
Consistent with the comments by Travel4biz, Gimmelwald is a tiny village with not much to do, see or eat at. It's major feature for tourists is other tourists carrying Rick Steve's book. Just joking, but it is not a very substantial experience. That is of course, my personal opinion, and each person has their own idea about what appeals.
This link has a lot of useful information about the region, from an experienced traveler.
<<"Regarding Murren vs Wengen - I feel like Wengen is more expensive where Murren is slightly removed but still with great views. You have to take the cable car to get to Murren and you may enjoy that. I know we did. This is an impt note... most places in Switz will want you to stay 2 nights..">>
You take the cograil from Lauterbrunnen to Wengen, and the views to the right as you approach Wengen are stunning. You can get to Mürren by the really nice and scenic cable car up from Stechelberg after the bus from Lauterbrunnen ( as noted by Travel4biz) , or a more "ordinary" cable car from Lauterbrunen to Grütschsalp, followed by a "train" (more lke s couple of trolley cars) to Mürren.
In off season, you are less likely to run into the "2-night stay" issue. There are more choices of where to stay in Wengen,at least through September.
To get an idea of the lay of the land, check this map: