Tokyo - Kanazawa - Kyoto - Hakone - Nikko : Worth to Buy JR pass & NEX?

Hi, I plan to visit Japan from 30 - 8 Jun 2016, I plan to purchase JRPass but not sure whether need to buy NEX as well.

This is my itinerary :
30-1 June : Tokyo
2 June : Kanazawa
3-4 Jun : Kyoto
5 June : Kyoto - Hakone
6 June : Hakone - Nikko, back to Tokyo in afternoon
7 June :Tokyo
8 June : Back to Jakarta Morning at 11 japan time

pls advise - when should I activate JRPass? and do I need to purchase round trip NEx pass?

Thank you!!