You could reduce that to 7,000 yen... or even less. Here's my recommendation in two steps:

(1) Purchase a JR+SUICA package on your arrival. It will cost you 3,500 yen each and cover your journey to your destination in Tokyo. (You could, for example, stay in Shinjuku for easy access to Hakone and the Ghibli museum). Plus you'll have 1,500 yen each to spend on subways and trains... and you can claim back 500 yen each if you use all the credit on the card and take it to a JR ticket office to refund the deposit.

(2) Use the JR pass for the trip back from Tokyo to NRT.

If you really want to save money, then use the slower trains from NRT and the one-way trip costs 1,000 yen per person.

Well that covers a variety of pleasure rides - two days unlimited use of trains, cablecars, ropeways, boats and buses in the Hakone region.

It seems pretty reasonable to me. (You could also tag on some side trips without incurring additional expense. I don't think it's a good idea to spend all your time on trains and none of it seeing the stuff you came to see, but ... ).

Journeys on JR trains when you're using your pass will be free. That gets you from Kyoto to Osaka and back, for example. In the Tokyo area, you will have 1,500 yen towards subway/ bus/ train rides if you purchase a N'EX + SUICA package on arrival.

You don't need to use a JR pass to visit the Ghibli museum. The fare from Shinjuku to Mitaka is 210 yen (one way). The bus from Mitaka station to the museum is 300 yen (return).
So that's 1,140 yen for the two of you.