Dong, Sexyama, and Bendo are must haves for the card. Sucks Kang and KZ are stuck with military duties now. Choi should definitely be on it if he's healthy and would be good to get Lim back in action.
Hopefully they sign Kwan Ho Kwak if he wins his fight this weekend and Yoon Jun Lee if he wins his upcoming fight. I would want Soo Chul Kim as well but he's wrapped up in both ROAD and ONE so probably not likely. Those 3 are probably the biggest Korean prospects at the moment, Soo Chul Kim is definitely UFC ready, Lee can definitely hang with at least the lower end guys already, and Kwak is still a bit raw but he has a high ceiling.