Hi Jaktara15 -
Welcome to My Swiss Alps!
That can be a very nice time to hike in the Jungfrau area. I hope that you have clear weather.
<<"You could keep on going to WengenAlp and take another train back to
Wengen. We hiked all the way down to Wengen, and I didn't think it was
too worth it given it's mostly forest and quite steep in some areas.">>
That matches my experience, quit a few years ago. It is Wengernalp, not WengenAlp
You have put together a substantial hike. Not sure where you have done your hiking in the USA, but a lot of what you have suggested is at 2000 meters and above, with significant elevation changes.
This map can give you more details of the topography and the trails:
map.geo.admin.ch/?topic=swisstopo&lang=e n&bgLayer=ch.swisstopo .pixelkarte-farbe&catalogNodes=139 2,1538,1396,1430,1436& layers=ch.swisstopo.sw isstlm3d-wanderwege&E=2637953.1 2&N=1163444.68&zoom=5
Color-coding of trails:
At least one National Route passes through the area:
www.schweizmobil.ch/en /wanderland/routes/nat ional-routes/route-01.html
Selected routes are covered in extensive detail on the Switzerland Mobility web site. Follow the links under the example above, and you can get height profiles for each stage. That is one choice on this page:
www.schweizmobil.ch/en /wanderland/routes/nat ional-routes/route/etappe-01560.html
My personal strongly held opinion, supported by many, [even Rick Steves ( if that matters) ;-)] is that the walk between Männlichen and Kleine Scheidegg, which you refer to in one of your bullets must be done in the direction from Männlichen to KS for maximum impact. Especially if you are aware of the history of the North Face of the Eiger, there is a substantial psychological effect as you walk toward it and it grows up and towers over you.
I've added a detailed crop ( taken when shot film) showing hikers, who may possibly just be visible in the North Face image. When the North Face image is printed large at high resolution, as it is on the wall at my home, seeing those hikers lets you realize the immensity of the Eiger.
And, whatever grandiose name has been given that trail, my Swiss friends call it "The Grannies' Walk." It is easy. And, it is surely the one of the better or perhaps of the best scenic trails, and which happens to be easy. Some images attached.
Serious walkers/hikers in the area like this next demanding hike. Not as much distance, but still a full day's hike. A forum member,. Mark, has provided numerous posts detailing the reasons. Search for them.
Most hikers prefer the other direction, from SP to First.