I also read the first one, I loved it.
I can sorta see what you mean about stretching the story, but I really enjoyed the detailed training (that's just a preference though, I can see why not everyone would like it that way), plus it helps build all the more for the next story!
I also just like to see his world in detail, and when he focuses the story on something like that, you get a good look at a part of it.

One thing, I am disappointed because in fantasy I really like to see different races and fantasy creatures, etc, and for the most part J. Flanagan's world seems to lack these.

Still, I cannot wait to read the next story!