Hi! Just like to do price check if purchasing a 7day JR Pass is more feasible and more convenient than taking one-way transportation via single ticket journey or local buses.
Day 1-3 Around Tokyo (staying in Shinjuku)
Day 4 Tokyo-Nikko-Tokyo
(Alternative is to take rapid train from Asakusa but some change train lines from Shinjuku and vice versa)
Day 5 Tokyo-Nagoya (Shinkansen)
Day 6 So here we're still debating if we'll head to Takayama or Kanazawa
Nagoya-Takayama or Nagoya-Kanazawa
Day 7 Takayama-Shirakawago-Kanazawa or Kanazawa-Shirwakawago-Takayama
Day 8 Kanazawa-Nagoya or Takayama-Nagoya
Grateful for your inputs!