JR Pass -

Hi,

We are a group of 4 adults and 4 children Visiting Japan in April for 13 nights. Our approximate itinerary is:
1. NRT to Tokyo
2. Stay in Tokyo 3 days
3. Tokyo to Kawaguchiko (
4. Stay in Kawguchiko and Mt Fuji 3 days
5. Kawaguchiko to Gifu via Nagoya
6. Gifu to Shirakawa-go
7. Shirakawa go to Takayama
8. Takayama to Nagoya
9. Nagoya to Kyoto
10. Kyoto to Osaka:
11. Osaka to NRT
Please let me know if getting a JR pass is worth it for this trip as we have to hire a vehicle for part of our trip. If yes, what pass do you recommend? Also, if we buy a JR 7-day pass, must we use it within 7 days of activation or any day during our visit up to seven days? Thanks for your help.