Patience my friend. You'll get there.

Also it really helps the helpers to have your backstory of previous balancing. For example, I remember reading through your other thread but don't remember alot.of the details. (You were well covered so I didn't chime in, buy still enjoyed reading along and watching your progress) Anywho keep all the chemistry thing in one thread.
GREAT. FC is consumed daily and target range is designed to get you to tomorrow without hitting minimum in between. There is no harm in adding a couple FC for insurance. Always verify 20 mins of mixing later. If the bleach is weak, or you've misjudged your gallons, you won't hit your target and could be low by tomorrow.
SUPER GREAT. This likely means you are still OK after dipping below minimum. You never want to touch minimum per the
FC/CYA Levels
It sounds acceptable-y, but it is SO not acceptable. It's a one way ticket to a swamp.
Irrelevant from here on out. It's a total of the FC and CC and meaningless. You need to know rhe 8+4 part, not the 12.
Is your fill water high CH ? You may want to add a bit less to account for the eventually rise if so.
Yup.

Why ? Any 7.x is equally good. Unless you were working on lowering your TA (I'd check through your thread if it was all here.


)
At 7.8 get prepared to add MA when it rises more, but there is no need to add until it does. Over time you'll get a feel for whether that's a day or 14. Or it might sit at 7.8 for good. Wait and see.