Is my itinerary worth the 14 day pass?

Hi

My planned itinerary from 12 - 25 Feb (14 days) as follows:

Day1-2: Tokyo
Day 3-4: Hakone
Day 5-7: Osaka
Day 8-9: Fukuoka
Day 10-12: Kyoto
Day 13 - Tokyo
Day 14 - Depart Tokyo

(a) Is it worth purchasing the 14 day JR Pass? (b) Can the JR Pass be used from Narita Airport to Tokyo city?

Thank you