Both will be executed—the ones that Andromeda had proposed. They would try to eliminate one of the castors of the magic circle, or objects that acted as their replacement. Conversely, Ephraim and Dayie will be doing the most dangerous job of all—
Exterminating the prime conjurer of the magic.
The faster they are able to do this, the quicker the battle will be over. The moment the castor of the magic will be eliminated, the necromorphs, along with the magic circle will cease to exist. That would minimize, if not, eliminate all the casualties.