I've always found it amusing how most everyone talks about how great the books and comics were, but 'oh no, of course they're not canon!' but then most of those same people consider half or more of the films crap, but 'of course they're canon.'
Just a thought.
As far as female Predators, it depends on which theory of Predator culture you go by. The Yautja theory, the more popular of the two, as espoused by Steve Perry in Prey, is a matriarchal society as was mentioned above with large, aggresive females that did not partake in the hunt. So no, the AVP preds were not females. With the Hish theory, brought out by John Shirley in Forever Midnight and Flesh and Blood, the Predators are asexual, and reproduce through a sort of budding, eliminating the need for females.