Using the old adage “When you have met one person with autism, you have met one person with autism.” one should not believe or expect anything. Just as looking at a childs fingers can’t predict how well a piano player they will be; making judgements on a level or extent an autistic trait will be expressed or how well the brain will bypass or rediscover areas which govern a trait is simply pointless.
DSM V may well remove some of the labelling prior versions created but there will unfortunately always be confusion for parents if this stigma of “Classic Autism” remains fixed in popular belief. In many ways Kanner did the whole field a disservice as his research used individuals who had intellectual challenges which were not directly connected with autism at all. This has left society in general with a stereotyped impression that an autistic child sits rocking in a corner, completely detached from “our” world.
Reading this and many other boards and blogs should inform you that the bulk of autism is nothing like what Kanner or Asperger described; the term covers everything from individuals who present completely detached to those who believe themselves to be “NT” but others may observe distinct autistic traits in them which the individual manages without “disability”.
No matter how much you read and how much advice you take on board either professional or experience based; no-one can give you a specific and definitive answer about anything. From the ten years or so I have been living and studying autism, the best piece of advice I could offer is to say that there is more experience and help on fora and parent groups like this one than you will find from the “professionals” outside truly dedicated autism research centres. Even taking all this on board, your child will still be different, and surprising, and challenging, and ….