Little Reader and Little Math do exactly what Doman tells you to do. I would recommend "Fit Baby, Smart Baby, Your Baby", which I understand to be the updated "Physically Superb" book, which I have read. Also the encyclopedic knowledge book would be beneficial. I think the "Multiply your Baby's Intelligence" is nice summary of most of the reading, math, and encyclopedic knowledge programs, so if you were only going to read one book, read that one, but if you read all the other books, this one is just repetitious. Maybe where you already have the BK products, this would be the best since it gives you a nice overview of the "why" behind it.
Good luck! They're all good books.