I love this kind of fiction novels! I would totally read it. A little note, and I don’t mean to be rude, I hope I can explain it correctly.
If you will not be able represent that group correctly, please write about a character you know well.
English is my second language so sometimes I can speak rudely unintentionally and without realizing it. I’m sorry if it’s the case right now.
I’m not sure what you mean, sorry 
I’m just doing it because I’m autistic and genderfluid (and more) and was hoping to help people see more from my angle, in the form of a book. I get misunderstood a lot, so I hope to try to represent some of my own processes in a story people will enjoy.
That’s wonderful! I thought you’re not autistic or genderfluid but just want to write about them. I’ve seen so many bad representation. It would be amazing for you to write about it.