dd1 is at an out of county SS. as previous posters have said, it was a bit of a struggle, but it is possible.
again, as said, you need to concentrate on why her current place (and the catchment SS) is not suitable, rather than highlight how much better the school you want is.
we managed to get a highly specialised and sought after placement, but you do need to get your points in order - sometimes including enough time to 'fail' at a non-suitable placement so that you can 'prove' it is no good.
in terms of verbal/non verbal - dd1 is in a class of 7, with all of them technically verbal to some degree. they all have individual IEPs and lesson plans, and are all catered for very well - dd1 is probably the most 'outwardly' communicative, but is not the most academically able in her class I don't think (hard to tell, as the classes are arranged not by age, but by suitability of children to be grouped together, and dd1 is the youngest by a good year or two).
I absolutely and wholeheartedly agree witht he 'fitting in' statements. none of dd1's class are that similar (they do all have the same dx, as it is an ASD school), but the one thing they have in common is that they all fit together well. dd1 can just be herself, and has proper friends for the first time.