That would make it an enormous project. I like the idea, though.
I doubt I'd be able to finish it, let alone inside the brick limit.
Just to give a sense of 8/1 scale...
This is 1/4 of the ring, the smaller one being a part of the model I did separately. The model is in the foreground too, making it seem larger.

EDIT: Dammit, I forgot to save that.