You and your starting either slave/peon and a few days later a bunny girl for 100 is enough to fish for the money you need.
I name the first girl with the same name as MC thinking that there brother/sister then start making babies to fill out the rest of the mansion with offspring training them up for the battles to come.
The bunny girl is nice to have a round and if you are nice to her once you get her she will be nice to you.
I use her as one of my main trainer girls to help with captives and new girls I get.
The first time playing can be hard if you don't know what to do but after you get the handle of it its easy peasy.
Build up the mansion to 10 rooms and fill them up with your kids making them work the grounds for food and sell it before you know it you will be rolling in the money.
Keep upgrading your mansion and work rooms and send some NPC's to other areas to harvest new stuff like trees and meat and other things.
To have an easier time with the battle's get at least 1 who uses a bow and upgrade to be able to hit everyone in 1 roll.
I didn't start with a slave. Was holding off on picking a guild. in hindsight, probably a bad idea.
The bunnygirl cost me 200 too, but that's probably my own fault.
As for the rest of it... it feels like you skipped a couple of steps, since you went from talking about having three slaves and breeding them, to suddenly needing someone to train captives.
I've yet to capture anyone, and am infact avoiding combat quests because they do not seem possible with my current lineup.
I did search the thread and found an old comment (from myself!) saying that getting a weapon changes combat from "borderline impossible" to "Oneshot every enemy" so... that's a priority too.
Siding with the workers was probably a mistake. I was trying to get set up on crafting, but it really feels like I need to side with the warriors just to get a weapon and my first starting slave.
Once I have those, I might be able to spam out enough food to get by.
I've been sending people off to dig for stone, trying to build a grain-farm but... that doesn't seem feasible before the 14th day.
Edit: I did fufil some basic quests for bread and cloth, but I don't know if it was worth it. They took like a day just to send people out to farm for the stuff, paid out fuck-all and then didn't repop new quests until my time was up.