Lighting -
For lighting, I've used V-Ray light, Target Direct light with V-ray shadows and HDRI Image.
Rendering -
Because of the so much details and the metals present in it , I choose the simplest type of rendering , and this is my opinion but can be different from person to person , so I advise you to visit V-Ray Help Index which will explain this more and helps you in finding the best way.
If you want to see the making ready for the render to this action you can follow these, pictures