I would be very surprised if he wraps things up in two books. The seven books thing came from his wife. Seven kingdoms, seven hells, seven faces of God, seven books.

He really should have made the children about 3-4 years older because somehow he has to have a 4-5 yr period where he can say "So-and-so took super secret training or found out they were really the last scion of this hero and came back a real bada$$".

He needs to start the next book with the sentence "It was five years since the events in blah-blah-blah". But since he likes writing cliffhangers it will be hard to do that. He's written himself into a bit of a corner. Oh well. I am willing to wait. I just hope the next book is out before 2015.