ok....there's nothing specifically in the index about adoption, but i would still recommend it as a great general read. it gives you a fantastic understanding of the workings of their brain in relation to emotional intelligence. it is a fantastic book- it has a section on under 5yo that i'm sure would benefit you.
i have not read the other 2 books. have you read 'toddler tactics' by pinky mackay? i have not read it yet but am planning on it soon. maybe that you help?