The Castaic may handle it with a wing and a prayer, but why chance it when you have the Catala there ready for action? With the Castaic you may well lose a nice fish that will be doomed to trail close to 100 yards (figuring 20# line) of line to its death. What a waste! With the Catala you should be able to put enough of a hurt on one that it will most certainly come in, but you will still get a good fight out of it.
Tight lines,
Wade