That is one incredibly melodic song. I haven't listened to stuff like that in a long time. I am curious what type of voice were you wanting for this song? I thought your vocals suited it very well. Your voice is smooth and sort of peaceful, I think it sounds right for the way the instruments sound. But I kept thinking Timo Kotipelto from Stratovarius would maybe have the fit you were looking for. Is that what you wanted, something high, melodic, and powerful?
I am not offering vocals, by the way, I am just curious. I don't sing myself, I am mostly a guitar player.