Hey Berklee,
Thanks for you comments! It's always good hearing someone else's opinions.
I'll try adding some more woodwind/brass during the song to tone down the strings - I totally see what you mean about them becoming repetitive.
And yeh, I'll need to work on the choir, I added it in at the last minute just to round it off but didn't really work on it properly.
The other stuff I've composed is really just trailer music, so short stuff, and I really enjoy it. I don't think this is my best piece but the end of it feels much "fuller" than my other stuff.
Thanks again for your comments