Nice work! Some tips I would add is to make the brass a lot more present in the mix (Such as at 0:56). Getting that big brass sound is crucial for epic compositions. I also might add more to the bass and add a sub-bass if you haven't already.
When the choir comes in at 1:37, I really got the feeling that I was in an grand battle. It reminds me of one of the Final Fantasy boss themes, so you've certainly done your getting the choir right. You also do a spectacular job splitting up the pacing of the song. It is not all in your face as some composers might have done. Overall, I enjoyed your piece a great deal and I also believe that this is your best work so far.