meandmyjoe I really feel for you
your ds sounds like a later born twin of my ds1. It is eerie. From the inability to nap, to the weird capacity to sleep all night, to the going ballistic for 10 mins when put on tummy...
I can give you a perspective though, 4 and a half years down the line. Ds1 has just run his own bath (and topped it up to his neck ), told me off in a kindly manner for getting him the wrong pyjamas, told me his latest made up story about aliens and listened raptly to 3 stories.
He is very adult identified. I think he must have hated being a baby. God knows I hated looking after him!! I actually fled back to work and left him for as long as possible each day with a nanny ( I think I was depressed) who was convinced he was a genius, because the only time he stopped whinging and complaining was when she read him books or put Baby Einstein on. (He's not, btw!!)
There are still some relics of his difficult former temperament. He still gets really angry if things don't go his way, i.e. if he spills a drink or something! He has little patience with physical things (like drawing), he wants it all perfect already. He is generous to a fault and highly sociable. It actually took about 3 and a half years before he worked out how to play by himself (!not trying to scare you or anything) but now I hear him in his bedroom reenacting episodes of Ben 10 complete with hero and monster voices.
I think these are quite special, highly emotional children- the high needs are so bloody hard to deal with but I think you get so much reward later on.