But my main focus with him is service dog training
Great aspirations. It looks like you are already on your way with your dog's natural instincts.
What specifically are your goals for service, if you don't mind me asking? I wonder because I am also in the process of training an autistic service dog, with me being the dog's primary person.
What are your primary needs in a service dog? They have a good group on Facebook for owner trained service dogs that had a lot of great ideas. I can post the url if you are interested. You said you would be the primary, are you training for yourself or another? What you will want to train will be what you need most that they can help with.
My goals for scarlet are different from what most need because of her severity and her specific needs. Atlas will mostly do work in the home as opposed to in the community. But I do heel train and have him do strict obedience outside just in case that changes. (If i ask him to sit and stay, I can walk out of site into another isle and he'll still be there when I return until he is released. He mostly has that down, just needs practice. He is always at a heel, when at restaurants he's is always laying neatly under the table.
For her my biggest goal is find. (He will go to her and whine loudly to alert us where she is). She's very limited in her speech and does not respond to us when calling. She's been known to wonder off. Will start in the house with two separate commands. 'Find', will give him a treat whenever he goes to scarlet and sits beside her, then will add in the 'whine' then will work it up bit by bit to further distances.
I'd also like him to bark whenever she walks out the door.
Another goal is to help with her self stimming. When she is being loud to put his head in her lap. When she pets him he will be released (so as to give her a bit of space as well)
Right now her epilepsy is controlled so it's hard to train him for that. I'd like him to whine in front of her to alert us that it's coming. When we've had to have her sit on the ground for her safety he already goes and lays directly beside her when he could be anywhere else, but he chooses to be beside her.
I like the idea of him whining over barking because he has a very intimidating bark and a whine won't scare people away but draw more attention. People tend to see him and want to pet or are scared of him. He has a good loud whine that I want to start encouraging.