3 weeks trip Itinerary & Rail pass

Hi all

I'll be visiting Japan in May and below is my itinerary. I hope you can help as I'm not sure if I should take a
- 21 JR rail pass, - 14 day rail pass (starting when I leave to Kyoto) + first week buy normal tickets - 14 day rail pass + Tokyo Wide pass (for Nikko, Kamakura & Kawaguchiko)

11-05-17 Narita 09:35 -> Tokyo (staying in Shinjuku)

12-05-17 Tokyo -> Day trip shibazakura festival & Fuji 5th st. by train & bus (alternative guided bus tour 8.800 yen)
13-05-17 Tokyo -> Day trip Kamakura
14-05-17 Tokyo -> Day trip Nikko (cheaper by tobu railway with Nikko city area pass ~4000 yen return)
15-05-17 Tokyo

16-05-17 Tokyo -> Kyoto
17-05-17 Kyoto
18-05-17 Kyoto -> Day trip Nara
19-05-17 Kyoto
20-05-17 Kyoto -> Hiroshima -> Miyajima

21-05-17 Miyajima (-> maybe Himeji) -> Osaka
22-05-17 Osaka
23-05-17 Osaka -> Koyasan (2d World heritage ticket)

24-05-17 Koyasan -> Kanazawa
25-05-17 Kanazawa
26-05-17 Kanazawa
27-05-17 Kanazawa -> Shirakawago -> Takayama/Hirayu (Nohi bus)
28-05-17 Hirayu
29-05-17 Hirayu -> Takayama -> Tokyo

30-05-17 Tokyo

31-05-17 Tokyo-> Narita Airport flight 11:40