Mrs

Hello, I am arriving at Narita, Tokyo on 23 March 2017, then spending 3 days in Tokyo sightseeing. On 25 March, train to Toyohashi. On 26th March, train to Hiroshima. On 28 March train to Kyoto. On 31 March train to Kobe. On 1st April train to Osaka. On 2nd April return to Haneda Tokyo to depart 3rd April.
My question is whether it would be better to get a 7 day JRP or 14 day JRP?
I think I can use the JRP from the airports to Tokyo, but for the 3 days in Tokyo, will I need to get a daily Tokyo metro pass?
Thank you