What really matters, and what likely should have asked sooner, is what the PCs even want with this fort.
Do they want to have it fully staffed so that it can protect the countryside and attract settlers (that will be expensive and problematic as pointed out) or do they want just a minimal garrison to ensure that it does not fall into disrepair and drive away squatters?
Do they want to have it fully staffed so that it can protect the countryside and attract settlers (that will be expensive and problematic as pointed out) or do they want just a minimal garrison to ensure that it does not fall into disrepair and drive away squatters?