A couple of things.

One: the CYA you added will not make the pool clear. We added that so that your chlorine will be protected from the sun. It's the chlorine that will clear your pool.

Two, your goal is to get your FC up to 12 and keep it there. An initial dose of 2 gallons is good.
After that, though, test your FC the next time. Add enough to get your FC back up to 12. Repeat.

Here's your dosage:
If your chlorine is 10%: add 3C for every 1ppm increase you need
If your chlorine is 12.5%: add 2C, 3oz for every 1ppm increase you need