I'd leave the pH and Alk alone.....7.1 is fine if that's where your pool wants to be.

The CC of 1.2 indicates a need to shock...probably around 30+ppm to be effective.

And, as you already have acknowledged, you are DESPERATE for a drain and refill to manage the CYA and Alk. About two 60%'s will be needed to get your pool manageable.

I'm pretty sure how the CYA got there.....how did your CH get so high?