Better to still get 7day pass?

Hi Daniel-san,

I have some questions with regards to getting a 7day JR pass and travelling during the Golden Week. Below is my itinerary for my upcoming trip:

Day 1:
Arrival in Tokyo
Explore Shibuya

Day 2:
Meiji Shrine
Fuji Shibazakura Festival
Harajuku
Shinjuku

Day 3:
Disneysea

Day 4:
Make way to Osaka
(Tentative way of travel: Kuramae > Shimbashi > Shinagawa (to take Shinkansen Hikari) > Shin-Osaka > Namba) Dotonburi

Day 5:
Osaka Castle
Dotonburi again
Shinsaibashi

Day 6:
Day trip to Kyoto
Fushimi Inari

Day 7:
Day trip to Kyoto
Arashiyama Bamboo Forest

Day 8:
Osaka/Kyoto
Free day

Day 9:
Make way to Toyama
(Tentative way of travel: Namba > Umeda > Walk to Osaka > LTD EXP THUNDERBIRD > Kanazawa > Kurikara > Toyama)

Day 10:
Tateyama Alpine Route

Day 11:
Make way back to Tokyo
(Tentative way of travel: Toyama - Shikansen Kagayaki - Tokyo > Shinagawa > Keikyu Kamata)

Day 12:
Flight back home

I'm planning to get the 7day pass and activate it on Day 4, but this means that I cannot use the JR pass on Day 11 to go back to Tokyo. Should I activate it on Day 4 and buy a separate ticket for Day 11 or activate it on Day 5 and buy a separate ticket on Day 4? Which method is more worthy/cost-friendly?

Thank you in advance!