As Frances_Maeda said, the JR Pass is not the cheapest option based on your itinerary. But, if you are considering to make some day trips, then the pass would pay off.
Some interesting day trips that I would totally recommend you are Mount Takao from Tokyo (it takes about 40 minutes one-way), Nara from Kyoto (less than an hour by train) and Osaka (less than 30 minutes).
If I have to be honest, my favorite day trip was Nara. It’s a wonderful Unesco World Heritage place to discover where you can even feed the deer with some cookies!
In case you want to check if the JRP is convenient on your finale itinerary planning: https://tokyocheapo.com/travel/transport/which-jr-rail-pass-to-choose/