6 day itinerary

Hi! My name is Nico, from Australia and was wondering if you could please help me decide if it would be worth it for me and my family (a group of 8) to use the JR pass given our itinerary below:

Day 1 - Tokyo city self-tour (Shibuya, Harajuku, Asakusa and Shinjuku)
Day 2 - Tokyo Disneyland
Day 3 - Fuji Hakone Izu Park then back to Tokyo
Day 4 - Travel to Osaka from Tokyo. Tour city of Osaka
Day 5 - Osaka (Universal studios)
Day 6 - Osaka (city)

I would gladly appreciate your feedback! Thank you so much.

Kind regards
Nico