He is gifted but not mature. He's a silly 4 year old who loves fart jokes! He pushes and hits, runs, and laughs. It's like two different ages sometimes.
This is why I like the term "asynchronous" so much better than "gifted". They are still kids even if they are really smart.
I would look strongly at Kindergarten - as long as it's not boring he may get something out of it. It probably depends a lot on the teacher.
Also, if there are any summer camps for gifted (I mean asynchronous) kids in your area that may be worth looking at too.
