Is it work getting a 7 day or 14 day JR pass?

Hi there please could you advise on whether we should get 7 or 14 days?

Our itinerary is as follows:
Day 1 - arrive in Tokyo
Day 2 - Tokyo
Day 3 - Tokyo
Day 4 - Tokyo - Kyoto
Day 5 - Kyoto
Day 6 - Kyoto - Hiroshima + Miyajima island (day trip)
Day 7 - Kyoto - Osaka (day trip)
Day 8 - Kyoto - Hakone
Day 9 - Hakone
Day 10 - Hakone -Tokyo
Day 11 - Tokyo - Kamakura (day trip)
Day 12 - Tokyo
Day 13 - Tokyo (Haneda airport)

Appreciate any advice...
thanks