JR pass yes or no/1 week 2 weeks?

Hello,

My wife and I planned a vacation to Japan in July, we are looking so much forward to it!
I have some problems in choosing the right options for us concerning the train tickets.
we will be flying in to tokyo on the 24 th of july ( tuesday), spending 1 night in Tokyo. On wednesday (25 th)we would need a train to Nara where we will check out on monday the 30 th. we would like to take one or 2 daytrips to kyoto and or osaka ( not sure yet ) omn the 30 th we will return to Tokyo and on friday teh 3 rd of august we return back home.
Would there be any benefit for us to take a 2 week pass? since we ony travel far in the first week.so for instance using the metro when we are in Tokyo?

in other words, what would be a usefull solution for us?

its for 2 adults.

thank you very much!

Robert-Jan