4 day itinerary for my Switzerland trip

Hello, We are planning to visit Switzerland for 4 days and itinerary is as below -

day 1 - Milan to Tirano..Take Bernina Express from Tirano to Chur. Another train to Luzern and check in to a hotel in Luzern
day 2 - Mt. Titlis in the morning and Luzern sightseeing in the afternoon / evening
day 3- train to Interlaken early am and head for Jungfraujoch..return to interlaken via Lauterbrunnen
day 4 - take golden pass express to Montreux. travel to geneva and onward to Paris

Please let me know whether it is worth to do both Titlis and Jungfraujoch or I should use the extra time to go to Rhine falls.
Let me know possible other options.

Thank you for your responses.

Hello nilesh2013, welcome to MySwissAlps!

My personal preference would be to do both the mountains, because I would choose to see as much of the Alps as possible in the limited number of days. The falls are great too, but you'd be moving away from the mountains. Of course you do need clear weather to go up in the mountains, so your could base your choice on the weather forecast the evening before. A visit to the Rhine falls can be done with less perfect weather as well.