Value of JRpass for planned trip

Hello

We are travelling to Japan in the middle of April, could you please assist on the below itinerary:

April 16th: Arrival at Narita, then to Tokyo.
April 18th: Tokyo - Fujikawaguchiko
April 19th: Fujikawaguchiko - Matsumoto

April 20th: Matsumoto - Nagano City
April 20th: Nagano City - Matsumoto

April 21st: Matsumoto - Kyoto

April 23rd: Kyoto - Osaka
April 23rd: Osaka - Kyoto

April 25th: Kyoto - Hiroshima
April 25th: Hiroshima - Kyoto

April 26th: Kyoto - Toyko
April 26th to 29th travel within Tokyo

Is it smart to get a JRpass? and if so should we get the 14day pass and would the Green Cart a good choice?

Thank you for your help:)