Children’s Adventure Story 5000+ Words

I want to publish a fresh, engaging adventure tale for kids that runs well past the 5,000-word mark. The tone should be fun, imaginative, and age-appropriate, with language simple enough for independent readers yet exciting enough to keep them turning pages... (Budget: $250 - $750 USD, Jobs: Book Writing, Content Writing, Copywriting, Creative Writing, Editing, Fiction, Ghostwriting, Proofreading)