I have a four year old daughter and a four year old nephew. In all honesty, he sounds like a typical four year old. The only thing I see there that isn't typical is the sleep patterns. However, that could just him being him. I honestly wouldn't worry about it. However, if you are concerned talk to your pediatrician first and see what they think. If they feel there is a problem they will refer you out to someone who specializes in children.