Model and normals look great. I think the diffuse and specular are rather ineffective. Why do you have all of that cloudy shading detail in the spec? I think baking ambient occlusion would make a lot more sense
thats mayas history in the mesh getting a bit confussssed, delete the history and or combine the mesh with a cube to fix. could we see some different shots with no diffuse and a flat specular, i think you have some normal issues in there