Kurama and Kibune

I am planning to spend one day in Kurama and Kibune from Osaka, starting from Kurama. How long the hike trail takes? And about the restaurants along the river in Kibune, there is any of them where it does not need to pay too much for a lunch?
Do you think it is better to walk from Kurama to Kibune or to come back to Kibuneguchi station and then take the bus to Kibune? I like to walk, especially in the nature...
Thanks to everyone!

The hike takes about 1 hour. You can read it more here
http://www.japan-guide.com/e/e3933.html
http://www.japan-guide.com/e/e3967.html

As for lunch, are you talking about kawadoko which is lunch on a platform above the river? I don't when you are going but it is done between June and September. As it is kaiseki, it tends to be expensive.
http://www.japan-guide.com/e/e2348.html

Not many offer english menu, but here is one I found
http://www.kibunesou.com/en/