This probably is the rarest of the rare image considering the fact that it is very difficult find a King Cobra in wild let alone a mating event.
From creative nature photography perspective personally I think better angle probably helped here (may be lower angle to include even blurred faces of folks in the back). I think focus is bit off but consider the anxiety you might have had this is expected From natural history perspective I would love to see the sequence, in case you are uploading it on to web please share the link.