28' x 48" Aboveground, vinyl, sand filter

FC 26
CC 0-0.5 (FC too high for 0.2 increments)
TC 26-26.5
pH 7.8-8.0
TA 200
CH 280
CYA 100
Temp 74-80 (80-85 when using cover)

I have been actively fighting green algae for about a week. Can I get feedback on whether I am beginning to understand the process as well as what my priorities are in addressing different numbers?

Other info: I just got a FAS-DPD kit which produced numbers above. I turned off the automatic feeder and started using 6% bleach. For past couple days I have been using 12% from a pool supply that is priced favorably and am seeing/imagining slight progress. The jet has been turned so there are ripples and it runs 24/7. I have kept solar cover off as warranty dislikes shocking.

Since algae is my main concern, it seems I need to keep my FC at 25 from chart in one of forums and check it several times a day. pH seems high and does not that affect ability of chlorine to work? Is there a target pH for helping with algae? The wheel says my target pH is 7.1, I think, for balanced water.

Using dry acid (test says 4lbs, wary of Muriatic due to asthma and past experience) to lower pH will lower TA some, but not enough according to some guides. Do I want to lower TA (with 20+lbs?!?) by dropping pH low and letting pH rise or should I worry about it after algae resolved.

Is CYA an issue other than it means maintaining FC higher? I will be draining 20-25% for winter and adding new next season which will lower it anyway.

I have seen a lot of information lately but am having trouble sorting it so I get optimal results. It would be nice if there was some sort of flow chart for addressing multiple issues.

I am trying to get it back, or mostly back, to the crystal clear bath water we had in 5 days for a party. Back then FC was at least 5 (test max) and pH 7.0-7.2 with pool covered and 85 temp. I did not do other testing until after problem took hold.

Thank you in advance for your patience and advice.