Ghostwriter for a book

hi, I'm writing a fiction book that's a bit in the direction of harry potter. I have written 2 chapters but am a bit stuck, I need help to continue the book and need about 18-20 chapters. about 1200-1800 words per chapter! the book is about a man who is part of a secret society... (Budget: $250 - $750 USD, Jobs: Book Writing, Creative Writing, eBooks, Ghostwriting, Research)