It's coming into focus now. I'm thinking that a comparative study of Lorca and Lezama triangulated to Góngora would be a nice chapter. I know someone's already written about this, if I could find it again. Even though the 3rd Lorca book is supposed to be Lorca par lui-même I still need points of comparison:
Rilke / Vallejo / Beckett / Lezama
I thought of giving the book the title: Why Lorca Matters. La importancia de llamarse Federico?