Insturment-wise, I can't decide whether I like "String Ensemble 2" (what you have) or "Choir Ahhs" better for the melody... I'll be experimenting with that. Compared to the OST the Ahhs sound better, but compared to yours the String Ensemble has a better tone to it. But I can change that if needed, I have my own MIDI program for small changes like that.
Among those changes is a looping process, so I can bring it to loop from the end to note 19 over and over with no real problems

The program that I use (RPG Maker 2003) has its own looping system, and also it's own fade-out system, so you don't need to worry about that

The only thing that I might want changed is the piano, as it does get a little too soft at points and I can't seem to change that with my program. So if you could do that, that's all I'll be needing. Thanks a ton, though! That sounds awesome!
EDIT:
Oh, and if you wanted the OST:
http://zeldapower.com/index.php?option=com_content&task=category§ionid=11&id=26&Itemid=53There's I think, 4 OoT OST's, but that'd cover everything that wasn't in the American OST along with some extra stuff.