Topper 80,
I don't think so, you're aircraft is Cat C and remain Cat C beside any malfunction.
Nothing tell you to swap for cat D, check AFTM and QRH.
In case of B737 you're speed will be VREF 40 + 55 knots, let's say about 180kts.
The same for a Circling minima and radius...still cat C!