I hope it's working out OP 
And Lonny, you have not let your DS down at all, you don't have automatic access to every bit of legislation, process or product downloaded into your brain or 'fitted as standard' when you realise your DC may have special needs in some way! As my DS would say 'naughty mummy, be kind!' He's not disabled (as yet anyway), but I am.
Anyway, I'd like to have a stab at answering that all important question 'well what do you suggest?' in response to the 'think of the TAs, your child's needs are taking (stealing!) resources from other children etc etc' ...
Clearly you need to just stop your child being disabled. Simples.
Whether it's from a delay in development or illness, physical problems etc etc ... You are being selfish and grabby by letting your child be disabled (ffs!).
It's like you have these crazed 'demands' on schools to obey the law and allow a child to have an education as every other child can expect without question. And by complaining about how difficult it is for everyone else, you'll somehow stop demanding these entitled things!
So, go get that magic wand and start a wavin'!
Grrrrr. 
I might be a bit err, touchy about the attitude I see on here and in real life far too much.
Being disabled is hard enough as a child or adult, and being forced to spend precious energy and resilience on battling for such basic things when you need every scrap of that energy and strength to help your child. It's a crying shame to see that most precious of resources spent on overcoming the ignorance and wilful refusal to understand. Argh!!!! It makes me cross.
Signed, a fervent supporter of disabled people big and small, and the amazing job their mums do every day.