dont even wast your time, most likely you will lose one of your cobras.and i dont even think that they will have fertile eggs even if they do get to mate before one kills the other, just get another kaouthia morph to breed with that suphan like a formosa or a albino or just a regular kaouthia and you will be very pleased the babies will look very cool probably very aberrant esp. if you use a formosa. this is just my opinion