I have a nearly-completed 100-page manuscript "Jewish Guide To Middle-Earth". It is a tongue-in-cheek look at how Jewish rituals and observances can be applied to Tolkien's world. (e.g. "How To Ritually Slaughter a Fell Beast and Make It Kosher." "Are Dwarves and Elves Allowed to Inter-marry?")
I have approached the Tolkien Estate, but they will not give me permission to publish.

Any way to get around or am I entering lawsuit territory if I move forward?