Tokyo -> Mt.Fuji -> Osaka -> Tokyo

Hi guys,

Can you please help if my plan is good to use a seven days JR pass? Since the pass is quite expensive, I do not want to waste if there's a way for the ticket to be cheaper. So here is my plan.

1st day - from Narita Airport Terminal 1 to our hotel (in Nippori station)
2nd day - From Nippori to Tsukiji Fish Market to Asakasa, Ueno Park, Tokyo Sky Tree
3rd day - From Nippori to Disney Sea and back
4th day - From Nippori to Mt.Fuji (5th station) then to Fuji-Q Highland, then to hotel in Osaka (hotel at Namba Station)
5th day - From Namba station to Osaka Aquarium, Osaka Castle, Shinsaibashisuji Shopping
6th day - From Namba station to Universal Studio then to Namba station and train back to Tokyo (hotel in Shibuya Station)
7th day - Shibuya, Harujuku
8th day - From Shibuya station back to Narita Airport Terminal 1