Slater will also have the options to choose impact players David Fifita, Felise Kaufusi, Reuben Cotter and Christian Welch. With the endless possibility of choices, Slater will have a tough decision to make.
Speaking to the AAP, the ex-Storm fullback has been looking at two primary things for his decision.
"The first thing you've got to consider as a selector or coach of the Queensland team is: Is the player capable?” Slater said to the AAP
"Do they have enough good habits and a well-rounded game that would stand up in a high-pressure environment like State of Origin?
"The second thing is: Is there an opportunity there?
"We are starting to get a whole heap of capable players who would do the job for Queensland."
"Tom Gilbert is a great of example of capable connecting with opportunity," Slater said.
"Last year he showed a lot of people that he was more than capable of playing for Queensland and in Game Three he got his opportunity.
"J'maine Hopgood is starting to build that capability in his game. He's played some lovely footy.
"Tom Flegler was in all three camps last year but didn't get that opportunity to play.
"He is really developing his game as a front-rower this year and I think he has taken a couple of steps forward."
"You've got to ask yourself: Why does Corey make all those cover tackles? The answer is that he works hard," Slater said.
"That part of the game, you are not always needed, but it is a necessity to be there. He has built that work ethic in his game.
"Those things can sometimes go unnoticed, but they don't go unnoticed when I watch our Queensland players."
All the forwards will be looking to impress Slater as much as possible with the limited time until the Game 1 squad is selected.