You can also try An Introduction to Ancient Greek: A literary Approach. I have used a variety of combinations of texts, including Alpha to Omega, the book mentioned above, JACT Reading Ancient Greek with Audio CDs, and lastly, Athenaze I and II. I like Athenaze because you read continuous greek, and they introduce a lot of real greek in small fragments, classical and if you like, biblical. Still not a Wheelock though but nice. Also, JACT is good but takes a long time... it does get to a place where you start to read real manuscripts eventually. They is a big difference between real Ancient Greek and what someone wrote in our century, so just being able to recognize forms and structure helps with reading real Ancient Greek. I try to mix the two to get a sense of what I am getting myself into.
Washington DC Area.
Knowledgable in Ancient Greek and Latin.