Tycho Brahe's Path to God

I'm so behind in my reading that it's obscene. Even if i plot out years ahead what i'm to read, i'm lost. Another confession.... i have not read everything by Kafka.

So do i need to line up the new edition of Max Brod's Tycho Brahe's Path to God that just came out this month from Northwestern Press, or is this just being too ambitious?

Montano's Malady is dwelling on Kafka's diaries, which only exist because Max Brod ignored Kafka's posthumous instructions to burn them. Which is more important? Or at least, what is more immediate reading? Brod the editor or Brod the writer?