My wife and I are planning a 13 night trip to Japan in October. We will arrive at Narita Airport in Tokyo, then proceed to the Shingawa Station. Our first 10 nights will be in Tokyo. We would like to take one trips using the rail pass. When we leave Tokyo, we will proceed to Osaka for 3 nights. Is the pass good for the lines in Osaka? Is the 14 day pass recommended.?