Do I need a 7 Days Japan Rail Pass

Hi dear,

I'm planning to stay in Japan for 10 days. During which, I will travel to the middle area of Japan from Tokyo.

Here is my scheudle:

Day 1: Narita Airport-->Tokyo
Day 2: Tokyo-->Kanazawa(BY JR)
Day 3: Whole day Kanazawa
Day 4: Kanazawa-->Shirakawa(BY BUS)
Day 5: Shirakawa-->Takayama(BY BUS)
Day 6 :Whole day Takayama
Day 7: Takayama-->Nagoya(BY JR)
Day 8: Nagoya-->Tokyo(BY JR)
Day 9: Whole day Tokyo
Day 10: Tokyo-->Narita Airport

Is it worth for me to use the 7 days Pass on Day 2, Day 7 & Day 8? Or any other suggestion?

Thank you very much
Carole