Yeah, looks good But from what I know, they weren't so hign. Your looks 6' tall or more, while tehy were 5,5' in most common cases. So the proportions should change a bit. Maybe 7 heads insteed?
Also the jaw should be maybe a lil bit stronger, without chin. Simillar like gorillas do.
Great work on the muscles and weight. They were thick with strong build for sure.