JR East 5 Days Pass

Hi ! My family of 5 will be travelling for 10 days in Tokyo. Is it economical and advisable for us to buy the JR East 5 days pass? Our traveling schedule will be
1st day: Haneda (2250pm) - Ikebukuro
2nd day: Tsukiji Fish Market & Ghibli Museum
3rd day: Asakusa, Akihabara
4th day: (Follow local tour)Mount Fuji & Gotemba Outlet
5th day: Tokyo to Nagano
6th day: Nagano
7th day: Nagano to Tokyo
8th day: Disney Land
9th day: Disney Sea
10th day: Yokohama & Haneda Airport

Would really appreciate your help.

JR East Pass too much no good.
http://www.jreast.co.jp/e/pass/index.html

Also D1 hotel in Ikebukuro really bad.
(not cloce from HND/to Tsukiji)

D2 Ghibli Museum needs reseration and already sold out most.
(Which date?)

I'm thinking of going on feb 20 which is a Friday.
Had requested a friend who's travelling in dec to get me the tickets.
Thanks!