I do agree that Faoii could be hard to pronounce and could cause some readers to pass over the book based on that. One of my favorite book series is The Sword of Truth series by Terry Goodkind. Wizard’s First Rule is the first book of the Sword of Truth series. Maybe you could do something similar? The Eternal Blade could be book one of The Last Faoii series? Just a thought. I like either name personally.