7 days JR Pass or individual tickets

Hello,

We are 4 persons who will arrive in Tokyo on April 14. I have the next questions:

We will land at 19.40 in Narita airport, and have the first night accomodation in Kyoto
1. Is there a shinkansen train at that late hour to go to Kyoto or we have to wait for the next day?
Our itinerary will be
* Tokyo airport * Kyoto (6 days ) and here we want to visit Kyoto city, go to Osaka one day and Nara on another day * Tokyo ( 4 days) visiting the city

1. Is the 7 day JR pass worth it to purchase or is better to buy individual tickets?

2. Can we take WiFi pocket even if we don't take JR pass?

Thank you a lot for any help!

Best regards!