Given that the wildcards are actually picked by the team captain and they really want to win, then I agree with you that Little Ko and Carlo are the obvious choices.
However, I'm sure politics and money have a say in every decision. So my guess is that whoever the captain is, Matchroom will heavily recommend that a representative from Vietnam, specifically Duong Quoc Hoang, be picked as one of the wildcards. The Vietnamese market for pool is absolutely huge, and it would be grave marketing blunder if a player from Vietnam isn't represented. So if money/politics win out, which I'm sure it will, then Duong will be part of the team.
So the question is who will be the other wildcard? Considering the inaugural event will held in PI, my guess the last spot will go to to Biado.