Kyoto / Osaka / Nara

Hi There

Im after some advice please.

I will be visiting Japan for 2 weeks from the 3rd October.

I want to know if it is worth me buying the 7 day rail pass. I plan to stay in tokyo for the first 6 days to explore so i wont be activating the pass straight away, on the 10th 0ct i will travel to Kyoto where i will stay and make day trips to osaka and Nara. I will return back to Tokyo on the 14th October.

If i buy the pass i was thinking to get the ordinary pass (not 1st class) will there be sufficient room to store luggage on standard coaches?

I just need some advice as to whether my trips require this pass or i can buy normal train tickets for my destinations?

Thanks in advance for your help
Julie