CAT ll/lll questions and input needed(a320)

[WhySoTough]

Have been reading and trying to understand the concept in detail.
I'm only just getting qualified for these low VIS approaches so please go easy on me. It all seems very demanding.

So basically we always do an autoland (atleast in my company).
We always aim for a CATlll B NO DH as long as the airfield supports it.

We can downgrade to a CAT ll or cat lll with DH if we have lost aircraft capability, provided that we have the weather ofcourse for it, and this all happens BEFORE 1000 feet, is this correct?

Below 1000 feet we discontinue for any of the following :
1- alpha floor. 2- autopilot off. 3- triple clic 4- master caution 5- eng failure.

EXCEPT in a cat lll B where below the alert height of 100 feet u ONLY discontinue in case of autoland warning or a NO flare.

Now I don't understand why we can't hand fly a cat ll or maybe even cat lll with DH manually if autopilot trips and continue if runway is in sight at DH?

Also. If you don't see "FLARE" at 30 feet, is this an immediate go around or can you disconnect and flare?

I will continue to ask questions when I can think of them, as it is quiet a confusing topic for me still.
Please do correct me if any of what I have said is incorrect.
I appreciate any help.

Thanks guys.