7 or 14 day pass?

hi, My wife and I will arrive in Tokyo Narita on April 5th. we'll stay in the tokyo area until the 9th, possibly with a day trip to Nikko during that time. On the 9th we'll travel to Nagano, stay in the area two nights, go on to Kyoto for two nights, go on to Hiroshima for one night and then return to tokyo on the 14th. On the 15th we may take a day trip out to Matsumoto to see the castle. We leave from narita on the 16th. I am thinking to purchase 7 day passes and activate them on the 9th to cover the travel to Hiroshima and back including matsumoto. This leaves us paying separately for local travel around tokyo including a possible day trip to Nikko. I am thinking it is not worth the extra for the 14 day pass as it looks like Nikko round trip on the Tobu line is around $26.00 each. what do you think?