Adding 80 oz of 8% bleach would have added approximately 16.3 ppm of chlorine to your 10.5 that you already had. Too high, especially in a pool with low CYA. Take a look at the Best Guess Chlorine Chart in my signature below. It is a guide for how high you want your chlorine to be for various levels of CYA. Also, there is a bleach calculator that you might find helpful. (It actually has more than just the bleach calculator part if you use the drop down menu from the upper left corner.) You can find it in a stickied thread near the top of the Forum Q & A section.

By the way, once you do get to the point where you lose no more than 1ppm of chlorine overnight and also have a CC reading no higher than 0.5, keep the high chlorine for one additional day for some added insurance before letting the chlorine drift down and then keep it in the range shown in the Best Guess chart.

Hope this helps.

EDIT -- Just went back and noticed that you have a gunite pool so the higher chlorine level won't hurt anything. If it were vinyl, you wouldn't want to go that high, though.