If you’re interested in biographies of Aleister Crowley, you may want to check out Aleister Crowley: The Biography: Spiritual Revolutionary, Romantic Explorer, Occult Master and Spy by Tobias Churton, which is now finally available. Apparently this work has materials that aren’t in Perdurabo, so they could make a good combination for your own library.
In addition to this new work, you should consider Richard Kaczynski‘s revised and expanded Perdurabo: The Life of Aleister Crowley.