Hey Jamie,
I'm getting to this one a bit late, but better late than never. There's just so much great music being posted so often, I simply can't keep up.
I wanted to weigh in briefly.... I'm not one to speak to production, so I'll ignore all that stuff. I think your lyric is brilliant. I wouldn't change anything there. You have a couple spots I might have sung slightly differently to move the strong syllables more solidly onto strong beats, but there's only a couple and they don't stick out, probably, for anyone but me.
I noted the difference of opinions regarding the range you chose for the vocal. I like it just as it is. Your voice works so well in those upper ranges; it sounds like you could just go up forever. And my personal opinion is that it works well for the song; it helps the eerie feel.
That's all I have. Great work!
Vicki