Brilliant Song
Amazing composition, you've really tied in all the different aspects of an orchestra beautifully; I'd be really interested to know what you used to get the choir, if you would mind divulging that information :D.
Anyway, my only quandary is that after the main chorus when the choir comes in it sounds almost like a backing track, maybe it needs something extra there or the choir needs to be louder? Either way it's a brilliant song and I guess the saying "If it isn't broken, don't fix it" applies.
Keep up the good work! :)