9.G,
A performance A aircraft from V1 on must be able to become airborne safely, clear all obstacles by the required margin and fly to a place where a safe landing can be made.
The only thing that being VMC gains the Performance A operator is the ability to determine track accurately and thus reduce the size of the area in which obstacles have to be cleared by the net minimum.
Under EU OPS min req. VIS for a visual 800 m not more than that. Can you fly a traffic pattern with this VIS? I have my doubts
The 800m is an arbitary figure. To make a visual approach then you have to be visual. You do not have to be VMC. It is not unusual to have a lovely clear sky with not a cloud in sight for 500 miles and the only thing stopping your visual approach is a bit of shallow fog at the aerodrome giving a reported visibility of 500m eventhough you can clearly see the landing threshold. Far safer to do the ILS in that case.