I recently finished this book after scouring the internet for material on Egyptian Astrology. It was a good read, but should come with a few disclaimers.
First, as perhaps the title should imply, a good portion of the material was "channeled" by the authors, and thus is not verifiable by others sources. This includes all of the correspondences they draw between their new Egyptian Astrology and traditional astrology, as well as some of their versions of the Egyptian myths.
Second, the authors sprinkled just enough scientific terminology into the book to make it clear they do not know much about Biology or Psychology. They use the Freudian term "ego" in a way that could more easily be identified with either the Freudian "id" or the Jungian "self" than with the ego.
Lastly, the correspondences they draw seem rather forced at time. For example, they identify Set with Mars, rather than Saturn as most Egypto-Pagans, including myself, would do. Set's identification with the barren desert, which the Egyptians in term identified with death, makes him an appropriate correspondent for Saturn. I presume this, and the other weak correspondences were made because of the inherent difficult in trying to completely overlay one set of mythos over another.
The book was a valiant effort to create a coherent system of Egyptian Astrology, but it has some weaknesses. I would like to see a book written on the indigenous Egyptian Astrological system developed in pre-Ptolemaic Egypt. Furthermore, it is arguable that the "traditional" astrology system is of Egyptian origin, since it was refined to an art-form in Ptolemaic Egypt.