Hey, how's it going? :)
Among other things, I'm an experienced DM (D&D), which means I've created loads of characters, stories, lore, descriptions, and so on. I do pretty much any kind of fiction, though, so anything you have, I can expand on it.
I see your budget is tight, but that's alright (rhymes not intended? :D).
I'm interested in hearing more details about the project, for example:
1) How many characters do you need?
2) How many land descriptions?
3) Can I see what you already have or at least some sort of an example?
I want to help, and this sounds like an inspiring project for me as I love to create/enhance, plus I always like helping people who have their own business/project.
As a freelancer, I know how hard it can be :)
So, please, share some more information with me, and let's see if I can help you. At the very worst, you'll end up with some free ideas :)