You're now in control! Great job. Feels awesome doesn't it? Keep in the recommended FC range, always at or above the low number and you're set. It's so easy you will certainly develop sparklypoolitis.
So next steps......
Do I stop adding CL until numbers get down to between 6 and 9 and then test every night and add CL to bring level back up to 9?
Do I need to test mid-day to see if level is going below 6 or now that the pool is SLAM'ed it should stay between those numbers for at least a day?
We recommend borax (or washing soda) because it is cheap. PH increaser is just a pool store markup of the same thing. You can use it when you need it.
You can get muratic acid at hardware/home improvement stores (lowe's, home depot, etc.) Make sure that you get the 31.45% strength.