King Pull Results

I pulled Chen in 11 pulls and got two育成 (Awakening materials?) in 41 pulls, so I thought that was it, but then Chen and Sugar showed up. Right after, in 10 pulls, thankfully the King appeared, completing the Light and Dark set in a total of 51 pulls. But I heard it's good to get the King to 3rd potential (1st talent enhancement). Since I had Royal Seals, I unlocked the 2nd potential. Thinking I'd just pull one more King, I started. In the end, during the additional pulls... Only Chen came out. I unlocked Chen's 4th potential and got Typhon, whom I don't even use lol. But funnily enough, during the additional 200 pulls, the King appeared twice at once. So it became 4th potential. Now I'm contemplating again, should I go for 5th potential (2nd talent enhancement)? lol I'm at 251 pulls now, so I only need 50 more. Up until now, everyone just went for Light and Dark, but by enhancing potentials, I might end up doing 300 pulls lol.