This is absolutely perfect for what you described it's for! I can easily imagine a flashback scene to this. It reminds me of the brief flashback scene from Pixar's 'Up' for some reason, which I would say is a good thing.

As a song in itself, it's well built and on the professional level of film scores I would say, though due to being custom made for a specific type of scene, it's not really the kind of song I would listen to myself. I can imagine this being very effective when paired with it's intended scene though, and that's really what matters with this kind of thing. Quality stuff!

This is certainly different from your other stuff, which is not a bad thing at all! At first I thought the pacing was a little slow, but as you kept adding instruments (flutes, harp, the brass section, etc.) everything flowed really nicely. I would have liked to hear more of that harp and perhaps more piano (at the end) just so that it would have given the song a little more emotion. Other than that though, I think this is a great piece and it sums up what you sought out to do! :)

Not my style, and I honestly don't think it really fits the montage feel, but non-opinion wise, I can't find anything wrong with it. :)