Best vacation protocol to keep pool clear?

We will be leaving for a week and have no one to keep up the chlorine in our pool. I use the 12.5% liquid chlorine. I want to avoid returning home to a pool full of algae. I have a few ideas of what to do but I need advice or experience from others. I really hate adding more CYA via the trichlor pucks but I know I have no choice.

1) I will be adding borates to 50 ppm.
2) I will switch over to trichlor pucks in a feeder for the duration.
3) I will brush the pool sides and bottom prior to leaving.
3) I will add liquid chlorine to shock level prior to leaving.

My questions are:

Should I add a polyquat 60% algaecide? If so, when/how do I add it?

Should I put our clear solar cover on or keep it off? Air temps are running in the high 80's to 90's and pool water is 85 degrees.

TA-100
CH-130
CYA-60
FC-6
CC-0
PH-7.4

25,000 gallon vinyl pool, Pentair DE filter, Pentair whisperflo pump

Your plan makes sense. You should add the polyquat a couple days before you leave as it will create a chlorine demand. Bring the pool back to shock level, then put a few tabs in the floater and hope for the best.