With the wonderful gift of hindsight, I would say c. We need as good a position as is possible - the men can recover once it is built. If we wait the Zulus will come - a military system which only allows you marry after you have been blooded in battle tends to encourage reckless attacks!!!! It has been alleged that Rorke's Drift only occured because the Impis involved had not been at Isandwana and were all unmarried - so sexual frustration led to them throwing themselves on the station's defences!!