My apologies - Another Swiss Pass question

Hello, all. I promised myself that I would not be one of those posting their plans and asking for advice, but alas...here I am. I have priced out the legs of our journey that I know we will be doing and I would like to get another set of eyes on it to make sure I priced things appropriately. I had a bit of trouble initially, but I think I figured it out. We shall see. For an overview, we are landing in Zurich and traveling directly to Murren. I did think about taking a slight detour to Luzern for a little break after the flight, but not sure. We will be spending our time in Murren hiking. We also want to do a day at the lake (Brienz and/or Thun) and take one of the boats. Additionally, I am sure we will make our way to Wengen at least one time. From Murren, we will be taking the train to Basel. I have tickets from Basel to Paris on the TGV. I have rounded the below ticket prices (and they are per person). Ok...here goes:

Zurich - Murren = $80
Murren - Basel = $80
Murren - Lakes and back = $52
Murren - Wengen and back = $35
Lake boat trip = $100
Total $347

With 1/2 fare card, total would be $304

With the 8 day Swiss Saver Pass, the total would be $334 and would allow us the peace of mind of not having to buy a ticket every time, plus it would give flexibility and an additional trip to the valley or Wengen, if we so desired. From what I am seeing, the Swiss Pass is a no brainer for us, but I am afraid I have done something incorrectly. Any suggestions would be greatly appreciated!!

Thanks so much!

Thanks, Arno! This helps put my mind at ease about my selection of the pass. I was going to do first class and take advantage of the luggage promotion, but I think we can swing 2nd class and if we want to upgrade for the longer leg, we will just pay the extra. From what I understand, there are not even 1st class cabins on some of the mountain trains we will be using. I am sure 2nd class in the Swiss system is much nicer than any coach class I have used when flying in America! The train system is completely new to us! Thank you, again!

No problem! That first class promotion just expired, but second class is indeed fine. First class is only available to Lauterbrunnen; everything up to Murren, Wengen and beyond is second class only.

Enjoy your stay!