Help with itinerary

I have a few places that interested to go n need help to fill in the rest. Prefer to go in budget but not sure which transportation suit me best. Please advise. Understand JR will not necessary be ideal if i do not fully utilised.

Kyoto (optional)
shirakawago
takayama
Shinhotaka ropeway
nara (optional)
Mt koya (optional)

I had not been to japan for more than 10 years. Should i arrive at osaka or tokyo?

Thank you.

When?

How many days travel?

Open google map now.

Will be 9D8N.

Arrive in Osaka.
Use overnight coaches and buses for intercity travel

Are you able to arrive at Chubu Centrair Airport (Nagoya) and depart through Kansai International Airport? This may save you some travelling time and expenses.

The following pass may be of interest to you, but it does not include travel to Shin-Hotaka: http://www.japan-guide.com/e/e2361_takayama_hokuriku.html

To Nagoya then back Osaka is very expensive in my country. The Ticket is 3 times normal return ticket.

The JR pass is very helpful.
Can i know where can i find more information on overnight train?

Thank you.