15 days - is it worth getting a 14 day pass

Hi

We have booked tickets to be in Japan 16-30 May this year. We have the following idea for our itinerary, but would love to hear whether it makes sense to get the 14 day pass (or maybe a 7 day pass for part of this trip). We have never been to Japan so it would be great to hear anyone's help/suggestions :-)

16 May Day 1. Narita Airport – Tokyo
17 May Day 2. Tokyo
18 May Day 3. Tokyo (daytrips maybe to Nikko or Matsumoto)
19 May Day 4. Tokyo – Kiso valley– stay in Tsumago
20 May Day 5. Kiso valley - Kyoto
21 May Day 6. Kyoto
22 May Day 7. Kyoto - Kinosaki onsen
23 May Day 8. Kinosaki Onsen - Osaka
24 May Day 9. Osaka
25 May Day 10. Osaka – Koya San
26 May Day 11. Koya San – Takayama
27 May Day 12. Takayama
28 May Day 13. Takayama - Tokyo
29 May Day 14. Tokyo – Narita
30 May – 12:15 Leave Narita, 23:45

Thanks a lot!