as long as LAND green is there at 350ft
That's the gate for autoland capability.
Our company regulations used to say that the REQ TDZ RVR could never be less than 350m for a CAT2 with a manual landing. But this is now taken out of the OM-A.
If your company declare such limitation, you have to compy with. In my company (Jar-Ops rule), as per OM part A, after the OM or equivalent position gate as soon as you get in touch visually with the runway you split to visual approach & landing, so minimum TDZ rvr is no more needed. See and land.
Rgds.