I'll let them do all the critiquing ^^. I have to say that this is definately OC material, in fact it surpasses quite a few of the Final Fantasy remixes IMO, rearrangement wise anyways. I'm new to this stuff, but even I know that this is passable, if not well, it's damned near . Hope you hit pay dirt Gorgonian.
Oh and, BTW I like the trumpet sample...I noticed that most remixers tend to avoid brass instruments as if they had suddenly sprouted a million thorns, gives it an authentic feel ^^.