RWC 2019

Coming to Japan for the RWC in October with the following itinerary

October 18 - Land in Kansai Int Airport - overnight in Kokura
October 19 - Oita - overnight in Kokura
October 20 - Oita - overnight in Kokura
October 21 - Kokura to Hiroshima - overnight in Osaka
October 22 - Osaka - overnight in Osaka
October 23 - Kyoto - overnight in Kyoto
October 24 - Kyoto to Tokyo - overnight in Tokyo
October 25 - Tokyo
October 26 - Tokyo
October 27 - Tokyo
October 28 - Tokyo to Kansai Int Airport

What is best - a 7 day pass and a direct ticket/flight back to Kansai or a 14 days pass to use in Tokyo
Thanks for any help and also suggestions on where to visit outside of Tokyo on 27th October if we use a 14 day pass