I've beaten FREE twice with disorganized ghettos that didn't even use anything other than in-game tools.
I'm pretty sure a kingdom being led by people a lot better than me and full of players who are actually active and organized is up to the task.
Beating FREE is easy, beating FREE and not having them get butthurt and extend the war a week out of spite which they did both times I've beaten them, is not.
Regardless, FREE could have waved us at any point.