Wich pass 14 or 21 days?

Hello
We are coming to Japan on March 17.
We fly into Tokyo Haneda and have the following train trips during our stay.

Tokyo - Yokohama (march 18)
Yokohama - Kyoto (march 18)
Kyoto - Nara / Nara - Kyoto (march 20)
Kyoto - Osaka / Osaka - Kyoto (march 23)
Kyoto - Hiroshima (march 24)
Hiroshima - Takayama (march 26)
Takayama - Kanazawa (march 28)
Kanaawa - Hakone / Hakone - Tokyo (march 29)
Tokyo - Nikko / Nikko - Tokyo (march 31)

Can we use the JR pass to complete all of these trips and woul it be cost effective? Wich one 14 or 21 days?
Thanks
Marcos