What a nice track !
Your description is already technically exhaustive, so I'll speak from a feeling point of view: your music is very well constructed, so much so that the loop goes unnoticed. It would fit right in a good indie game (I say indie because AAA triplets would have hired a real orchestra).
I love the intro, which reminds me of Koji Kondo's epic compositions, and I love the trumpet melody.
Bravo !