It's fanfiction. It's 50 Shades of Sauron. If you want to call the thing you're doing an 'adaptation', you can't directly contradict the established source. Something RoP did in the first episode and continues to do all over the place.
It's not Tolkien, it's barely related to Tolkien. It's a wholly independent work that really didn't even need to have bought the source rights. A few name changes and you'd have a derivative, but standalone story.