Quite messy, there...
I'm hearing quite a few conflicts of ideas, in here. Admittedly, the choir is a fairly nice sound (although their attacks are rather hard - smooth their attacks using the 'attack' or 'velocity' options), but everything else sounds like it should be in another song (fake guitar? Raw saw wave? Sitar?). It's not that bad if you can make it sound like a consistent whole, but this track doesn't do that.
If you want to keep the instruments, mix them in so it doesn't sound so random. Bring the instruments that carry the tunes to the front of the mix (The choir, probably), put small textural elements in the back (like the sitar, for example) and don't flood the soundscape with a wash of the same instruments all the time (the choir is there the whole time - it's nice and all, but it looses it's appeal after a while).
This is begging for a drum track. That might help keep things together better.
The arrangement is spot on to the source, pretty much. Yay.
There's a lot of work to do, but this IS a track that doesn't get nearly enough attention, so kudos for the attempt.