N'EX Tokyo Round Trip and Tokyo Subway Pass

Hi,

I am travelling to Tokyo this 30/9/16 - 8/10/16. Basically my itinerary is going to be like this:

30/9 - Arrive at Narita Airport - Shinjuku - Shin Nakano (we are renting in Shin-Nakano)

1/10 - Shin-Nakano - Harajuku - Shin-Nakano

2/10 - Shin-Nakano - Ginza - Shin-Nakano

3/10 - Shin-Nakano - Shinjuku - (HAKONE PASS to Odawara) - Shinjuku - Shin-Nakano

4/10 - Shin-Nakano - -Ginza Station - Tsukiji Chome - Ropponggi - Shin-Nakano

5/10 - Shin-Nakano - Akasakamitsuke Station - Asakusa Station - Ueno - Shin-Nakano

6/10 - Shin-Nakano - Shinjuku - Maihama (Tokyo Disneyland) - Shinjuku - Shin-Nakano

7/10 - Shin-Nakano - Shinjuku - Yokohama - Shinjuku - Shin-Nakano

8/10 - Shin-Nakano - Tokyo - Narita Airport.

I was thinking of buying the N'EX Tokyo Round Trip Ticket to cover the area for Narita to Tokyo, Shinjuku, Yokohama and Maihama. and for Tokyo area using the Tokyo Subway pass. Is it possible?

I am actually quite confuse on the coverage and using the N'EX Tokyo round trip ticket.
Hopefully anyone can assist me on this.

Thanks.

1)
Not covered all section and all days also
except btw NRT and "Tokyo (pass coverd) area" by N'EX
and other JR-East line trains after/before N'EX at "Tokyo (pass coverd) area".
So "N'EX TOKYO Round Trip" ticket is just oneway(A ticket for going fr NRT)
and oneway(B ticket for return to NRT) two travel date discount ticket of N'EX with aound only.
Read again pls!
https://www.jreast.co.jp/e/pass/nex_round.html
After boarding the N'EX, passengers may transfer to another JR East train
(excluding limited express trains) to any JR East station within the designated Tokyo train area.
After exiting a ticket gate, the ticket cannot be used for re-entry.

Ticket like this.
http://f.ptcdn.info/858/032/000/1435467866-011JPG-o.jpg
https://www.flickr.com/photos/92068614@N00/18604912590/
This is a bit older than above in 2015. (ticket bottom "26" means 2014 as "Heisei era.")
http://pic.pimg.tw/cashbox168/1409561885-3759808419.jpg

2)
Tokyo Subway Pass(Which one?) not covered JR and other Private lines mostly.
In Tokyo only two subway companies "Toei" and "(Tokyo) Metro"
http://www.tokyometro.jp/en/ticket/value/index.html
http://www.kotsu.metro.tokyo.jp/eng/services/sub_ticket.html

Tokyo railway map: (by JR-East/PDF)
http://www.jreast.co.jp/e/routemaps/pdf/RouteMap_majorrailsub.pdf
White/blcak line : JR
NRT is map right big airplane icon with.

Subway map : (by Tokyo Metro/PDF)
http://www.tokyometro.jp/en/subwaymap/
Shin-Nakano stn is one of "Metro Marunouchi line" plased near Shinjuku 7 mins west.
(Don't take For Nakano-Fujimicho train when return at night)
https://upload.wikimedia.org/wikipedia/commons/3/38/Tokyo_metro_Maruno...
Nakano-Fujimicho(m-04/stn code) placed in branch line.(same Marunouchi line but)
Shin-Nakano is underground stn. (4 exits fr/to ground)
http://livedoor.blogimg.jp/e_life_tokyo23/imgs/a/7/a7cbd658.jpg
http://www.tokyometro.jp/station/assets_c/2016/02/figure_yardmap_shin-...
(map top is North.)

3)
HAKONE PASS saler is "Odakyu Railway".(Not JR/Subway)

No "Tsukiji Chome" name stn
"Tsukiji(Metro Hibiya line)" or "Tsukiji-shijo(Toei Oedo line)".

Maihama (Tokyo Disneyland nearest) is JR Keiyo line stn.
If take Subway,Metro Tozai line "Urayasu" is better than closest last stn "Kasai".
Take a local bus (no need transfer) about 20 min+
until TDR(Disney/R means "Resort" TDL=Land/TDS=Sea).
https://goo.gl/maps/9sN7EDfjMoJ2

Yokohama also JR line stn direct Rapid train operated fr JR Shinjuku access combenient .
(No need option ticket/Not valid by N'EX Tokyo Round Trip ticket as yr plan)
But Yokohama is not Tokyo as location address.
http://www.yokohamajapan.com/transportation/getting-to-yokohama/
http://www.yokohamajapan.com/transportation/discount-tickets-passes/
http://yokohama-bus.jp/akaikutsu/en/index.html