Fortress, what do you think about the cost of building it?

The question is, if you roughly join 70 fairies, and 45 Gogs, with 30 archers, how will this diverse group, with low morale, counter 1000 skeletons, for example, if this is the opposite of Necromancy?

I'm saying that it needs to be weakened somehow, because 1000 skeletons can't be obtained until the second week, but you can already start deploying units on the first week if you have the skill.