Why would you set the ILS minima since if you are planning to do a circling approach? You will never reach the ILS minima since it is lower than the circling minima and it could lead to ambiguity and a possible error in actualy busting the circling minima in poor weather.
We set the circling minima for a circling approach and the ILS minima for an ILS approach, the fact that we are following the ILS initialy doesnt make it an ILS it is still a circle to land. In fact we round the circling minima UP to the next hundred feet i.e 820 would become 900 etc etc