JR Pass

Hi,
My family is visiting Japan in mid Dec. We are not sure if JR Pass is the best option for our travel plan as follows:
Narita airport to Nagai
Nagano to Ainokura village
Ainokura to Tokyo (Toshima-ku)
Tokyo to Narita airport

Base on this itinerary, is buying the JR Pass the best option for our transport in terms of cost ? If not what other options are there ? I heard there are other passes like SUICA or PASMO. Are these any good ?

Greatly appreciate if you could advise me.

Thanks heaps !