Dude, you're fucking retarded. The MC is a regular ass dude who runs a fucking hotel and has maybe a grand to his name at any given time. He doesn't have an army, he has a handful of tiny girls.
The Android you think he could use to take over, couldn't do shit because the military doesnt keep their weapons on publicly accessible networks. You could be the greatest hacker in the world and you're not getting on the internet and hacking into fucking missile launch programs, or any form of weapon controls.
Kali has a rich dad, but he's not going to try to overthrow the government of an entire nation. Otherwise she's just a mid-level coder.
Ashley, Felicity, Emma, Ellen, Hana, Maria. Useless in any sort of uprising.
Lucia could maybe use social media to get her followers on your side over time.
Autumn might be able to sway church rhetoric towards abolitionism over time, but even as a saint she's little more than a local church leader, and getting religious people to change their minds about anything is about as easy as convincing a frog to grow feathers.
Making Maria's story public might be able to garner sympathy, and get people thinking about what would happen if they had a half elf child, or fearing finding out they themselves could secretly be half elves.
Lin, Nia, and Sylvia are actually the most useful in terms of actually doing anything to get rid of slavery because they have the potential to sway public opinion, and Androids ability to access public networks and spread their message is the most valuable ability she has in that regard.
You don't stop slavery with assassinations and molotovs and shit. That just makes the public view you as terrorists and turns everyone more against you, and in the instance of this story, probably causes a lot of slavers to just murder their slaves or destroy their androids out of fear. You do it by swaying public opinion to your side, until your side has more power than those who want to keep things as they are. Then if things do progress to violence, people are actually on your side and ready to stand up with you.
The bullshit you're spouting would have the MC dead within a week after accomplishing exactly nothing.