I don't know about the CA14 sound, but the AT822 is a very nice mic, particularly for a matrix, where you can strengthen and/or crisp up the vocal with the soundboard feed.
The main thing is get the mic close to the stage. If you can clamp it somewhere, run wires, and put your recorder at the board, that is an ideal setup. I've used this many times.
If you're going to put the mics farther back, I would hold out for some good condensers, either Beyerdynamic MC930 or AKG 463 is what I use, but lots of other possibilities as well. I've noticed that lesser mics don't sound as good when you get farther back in the room.
Richard