Curious if your Pinch Hitting early in the game, are you using another Catcher to hit or another Position Player? Once you use a Positional Player, unless you do a Double switch, you lose him the rest of the game. Might not be good idea. Might need Defensive replacement late in the game, or Match-up with another Pitcher late in the game. Usually score, Match-up, and situation, would dictate Pinch Hitting situation. Don't panic early in the game, in another words.
None of these Catchers are Johnny Bench. If your ahead no need to do anything. Your not gaining by Pinch Hitting, weak hitting Catchers, especially with another weak hitting Catcher. You don't want to lose Positional Players for later in the game, because as the game goes on you might need them. 2 Catchers in the AL series, maybe 3 in the WS, if you get that far.
In the WS you also have to think about Pinch hitting for a Pitcher too. That's when I would want 3 Catchers.