Can you please suggest me an advice?

I will go to Japan on 13/01/15 to 20/01/15

my itinerary is ...

13/01/15 From Bangkok Thailand to Narita Tokyo.... I would like to stay at Odaiba onsen
14/01/15 Fly from Narita to Sapporo stay 1 night
15/01/15 Go to Otoru stay 1 night
16/01/15 Fly from Sapporo to Kansai Airport Osaka stay at Namba 1 night
17/01/15 Travelling around Osaka and Kyoto....would like to stay at Kyoto for 1 night but this day i haven't book and accommodation yet because i checking how i can go to Kawaguchiko
18/01/15 Would like to visit Kawaguchiko and stay 1 night
19/01/15 Go back to Tokyo would like to stay around shopping area for 1 night
20/01/15 Fly back to Bangkok from Narita Airport

Can you please suggest me about the ticket that suitable for my trip? save time and save money if possible?
Thank you very much
Natty