VM(C)
Snigs asked a simple question for fact. Personal limitations should always be taken into account but that is not his question.
In regard to VM(C) ICAO states that the minimum height above a runway or obstacle must be; for CAT 'A' aircraft no lower than 394'. The in-flight viz must be no less than 1nm. For each procedure the Height and Viz varies and is specific and published and must be complied with. Check the approach plate.
The manouvring area is defined by ICAO but the flown pattern is not determined although flight must remain within the published area. Therefore the circle to land may be achieved by flying through and joining for a downwind pattern or breaking right or left to a downwind, base leg or circling final approach. Perhaps a tear drop. A climb from MDH to VM(C) in order to do this is not prescribed. The pilot must at all times remain visual with the runway or its environment (lighting).