I had started typing out a response but Andre got there first!

Just to add, as a general matter unless you are doing very long distances on a single day, the passes (Swiss travel pass, Tell Pass for Luzern area, Bernese Oberland pass) aren't worth it. The longest you have is Lauterbrunnen to Zurich, which is about CHF 80 full fare. That's the daily break even for a Swiss Travel Pass Flex: http://m.swisstravelsystem.com/en/passes/swiss-travel-pass-flex.html

I haven't included the mountain rails as these are usually excluded from the passes anyway - they will give you a 50% discount, no more than the Halb tax card would anyway. Although, in your instance, the Tell Pass does include the railway mountains, Rigi is cheap anyway (CHF 50ish for a full price day pass) and you're going back to Luzern, so again the price of the pass isn't worth it.

I did do a quick check of your plans on SBB vs pass combinations and it does seem that you are better off ignoring the usual passes, and provided you are definitely going up Jungfraujoch, a halbtax will make you chf60 better off each vs no Halb tax.

Enjoy our wonderful country