She looks about right. It seems to me the "neck" of the ship should be just a touch wider. (Where the cockpit 'V' meets the body.) That could just be the camera angle of both of those shots playing with my eyes, however.
Your textures are very true to the original plans, but those tricked the eye into seeing more details by putting top and bottom view in one image (don't even want to mention the cutaway from the blueprint posters). I don't know if metasequoia supports it, but i think a little bump mapping would do wonders on these textures and they'd still be true to the original.