are you planning on taking this into z-brush to create normals if yes i believe their are a lot of polys which you could possibly get rid of im looking in the arms and the back. You should be trying to construct a cage for the normal map.

I your not going into z-brush then you should try to keep it as low as possible in poly count then as you increase edges increase detail. This way you will only ever have the lowest possible amount of edges.

besides from that it has a good silouhette and is proportioned well good luck
hope this all helps