sounds like the intro for a chicane track, was waiting for bryan adams to start singing haha
the emotion starts ramping up with that clari, nice! the brass/choir layer has a really slow attack which kinda throws it way ahead of the beat, you can trigger those notes a little earlier so they hit their peak volume on the beat.
the drum kit is kinda general midi sounding and have a really different energy to the rest of the song, like you have this really laid back pop ballad beat up against this beautiful, epic orchestra and it's just weird haha. i think a really subtle but large reverb (in terms of room size) on the kick and snare (toms too maybe?) might give them the same presence. honestly, i'd probably just try a totally different approach for the percussion with totally different samples.
otherwise this was really good. i liked the structure in particular, i'm a sucker for pieces with long builds and lots of tension :)