The proportions and everything look right to me. Like you say needs more work on the normal map to help push out the details like creases, muscles etc. Be good to see a wire, although from the overall feel of this I am sure the topology is great.
You have any plans to put him into a scene for the final render or you gonna go for an epic pose. Keep up the great work though and look forward to seeing a final render of this with the completed normal maps.