Okinawa - possible routes

I am not really sure if I will make it all the way down to Okinawa... If yes, here are some ideas for routes:

• Okinawa (Honto)
• From Onna to Kouri Ocean Tower
• Ride proposed by ニッポン快走サイクリングコース book on page 121 (private link) 
• From Yonashiro to Ikei island
• Ride proposed by ニッポン快走サイクリングコース book on page 131 (private link)
• Entire Okinawa Honto: http://www.kancycling.com/Okinawa/Okinawa_Route.html
• Miyakojima & Irabujima
• https://travel.rakuten.com/campaign/ranking/cyclist/

Attractions in Okinawa

• http://www.japan-guide.com/list/e1247.html
• Attractions (Okinawa Honto)
• Naha (Shuri-jo castle) (UNESCO World Heritage)
• Ryukyu mura (open air museum)
• Attractions (Other islands
• Zamami-jima (island)
• Taketomi-jima (island)
• Iriomote-jima (island)