Thank you for letting me know that that was not needed. I changed the maximum players in survival up so high because each infected bot takes up a player slot. I ran into problems with 14 survivors and 18 players, particularly the console was complaining that it couldn't create a hunter and a tank. The limit was reduced to 12, allowing up to 6 special infected at a time.
These are only results of my testing, if anyone has suggestions or corrections, they are welcomed.