ummm idk
7 for effort dude, A bit high, but the spirit of the music was there, try lowering the pitch, and bring in a little bass. I used to go to church and i regularly listen to Chant, Most notably Japanese Monks chant.
http://www. youtube.com/watch?v=A1evxMA7yYw
Just take out the Space, and even Gregorian chanters had a deeper tone. So, all in all, nice effort, but you're not wuite there yet, keep at it though!