Final itinerary

1.)Here is my final itinerary I’m pretty sure the 21 day pass is worth while can you confirm?
2.)Do you have any advice on how to save money on rail in Tokyo April 19-24.
3.) SInce all currencies are not available on your website can I chose from any of the options provided when I purchase my tickets?

Arrive March 28 in Tokyo
29 - Tokyo
30- depart for Nagoya by train
April 1-5 day trips from Nagoya to Kyoto and one day Nara by train
April 6-7 train from Nagoya to kasugai to meet friend for weekend
April 8-10 depart Nagoya to Hiroshima by train. Day trip to Himeji and one day inskushima
April 11 travel from Hiroshima to Osaka for the day. Leave Osaka in the evening for Nagoya
April 12 Nagoya
April 13 travel from Nagoya to Shizuoka by train to meet friend
April 15 travel from Shizuoka to Tokyo by train
April 16 travel to Sapporo by train
April 19 fly from Sapporo to Tokyo.
April 19-24 Tokyo (maybe day trip to Nikko)
April 24 fly home