20 days Itinerary help

Hello
I will be in Japan for 20 days and i am a little confused about my itinerary.
I would like to do around 6 days in Tokyo, 4-5 in Osaka, 4-5 in Kyoto, 2 in Hakone, 2 in Takayama/Kanazawa, 2 to Hiroshima/Miyajima and a day trip to Nara.
I originally had it planned
29th-3rd Tokyo
3rd-4th Takayama/kanazawa
4th-9th Osaka
9th-10th Hiroshima/Miyajima
10th-11th Hakone
11th-16th Kyoto
16th-17th Tokyo

I am unsure about what would be the best way to plan it to maximise my JR pass. Also if it would be better to use night buses or just train it.