3 weeks in Japan economical pass

Hi,

Please advise which pass I should buy for the following itinerary:

27 Sept: Kansai Airport -> Osaka
29 Sept: Osaka -> Hiroshima
2 Oct: Hiroshima -> Kyoto
3 Oct: Kyoto -> Nara -> Kyoto (day trip)
7 Oct: Kyoto -> Five Lakes Mount Fuji
11 Oct: Five Lakes Mount Fuji -> Tokyo

Would you recommend buying a Kansai - Hiroshima Area Pass (for use up till Kyoto) and then buying seperate tickets to Mount Fuji and Tokyo? Or buy a 14-day Japan Raill Pass? Or another more economical option?