Daniel-san,
I suspect we will be making good use of our 7 day JR Rail Pass if we plan to make all these stops. Do we have to make our Train reservation(s) ahead of our travel dates and if so which is the Hyperdia Website where this is done or can we just go to the Train Station on the day that we wish to travel. Not having traveled a lot via trains, not sure if it's best to book reservations ahead of time, similar to airline tickets.
Mahalo!
Mike