my year end family trip around 15 days

Hi, I am planning to go Japan in December, the following is my itinerary, please help me decide which JR pass to buy,
12/12 Taipei -Kansai Airport
13/12 Osaka - Himeji
14/12 Osaka- Tokyo
15/12 tokyo sightseeing
16/12 Disneyland
17/12 Disney Sea
18/12 Go to Mount Fuji
19/12 Mt. Fuji five lakes, back to Tokyo
20/12 tokyo- Gala Yuzawa
21/12 Gala Yuzawa-tokyo
22/12 Tokyo-Kyoto
23/12 Kyoto- Tottori
24/12 Tottori Sightseeing
25/12 tottori- Kobe
26/12 Kobe- Kansai Airport, back to Taipei
Please tell me which passes should I use based on the above itinerary. thank you

Wen Kao