summer trip - Tokyo-Kanzawa-

We are planning a trip over 19 days arriving in Tokyo then:

travelling from Tokyo to Nikko.
From Nikko to Tazawa Lake.
From Tazawa Lake to Ginzan onsen.
From Ginzan onsen to Hida-Furukawa.
From Hida-Furukawa to Tsumago.
From Tsumago to Kanazawa.
From Kanasawa to Kansai airport.

should we take a 2 or 3 week-pass?
should we book individual tickets?

thank you