I used the Mahallati book and went into the test feeling prepared, but I left feeling like I didn't read the right material. Luckily, I still passed, but I'm not sure I would recommend it like I would EET for seismic.
Expect 2-3 months. Once you hit the 60 day mark, you're allowed to inquire about your application status, but it took 3 months for me to get my Authorization to Test.