I understand what you're going for, although, it seems you're suffering from software lagging behind the creative ambition. Those MIDIs are killing me, especially the pipe organ in the high register and timpani -- as well as the attacks on the strings. Crashes are also written in a way that would be nearly impossible to perform. 2:52 is not too bad, but you're starting to get distortion in the mix.
There is certainly energy here, but I feel percussion and modulation suffered the most here. In 2006, this would be pretty par for the course, and I realize software for this sort of thing is often expensive even if it is sub-optimal.
Vibraphone wrapping up the end was a nice touch.
In short, you are a talented composer, but your instruments are dragging you down. You would have done better to simply have forgone the orchestral template and try deliberate synths, or added some reverb. Volume is also iffy at points. Lots of stabby high volume accents that stick out for just being suddenly loud, not really accented.
Could have done with a lot more percussion buildup, and I don't recall hearing a single snare or concert bass drum hits, which is a big thing in most cinematic music. Bangs and crashes. Lots of them. Cymbals were written weirdly as I mentioned already.
Could have done seriously with some double bass, cello, tuba, etc. It sounds like you wrote for a whole orchestra and sent the meat of them home. The sound pyramid should be a pyramid, not a lady Newt Gingrich silhouette. ;)
Keep writing, though. You'll get there!