I'm on the fence about this one OP but it's probably because of my own experiences!
I'm an autistic adult. 30 soon. I moved out as soon as I could at 18 but I didn't live alone, and it was still so much harder than when I had lived at home even though I was able to manage most daily living activities at that point.
Through circumstances that just happen in life I'm no longer able to manage or cope with a lot of things and I live back home with my grandmother and uncle and I need significant help with daily living tasks.
I think at 24 I would have been seen as very capable and I'd have burnt myself out to continue appearing so.
I do think it's sensible to move him out first and continue to offer support for a period of time before moving yourself but I also know from experience it can take years before further support needs present themselves when you're no longer able to cater to them.
I'm not your son though and only you know what his current support needs are and how you accomodate them and whether or not he is likely able to put systems in place to allow him to live independently.
Minimum wage solo living is also a nightmare for everyone doing it, but there are additional hidden costs with autism that he may not qualify for additional financial social support with if he has had his needs accomodated for so far.
My biggest struggles as a young adult though were social and how gullible, vulnerable and naive I was as I was also very young for my age. It meant that I ended up taking poor financial advice from people who weren't really qualified, in desperation due to being in a minimum wage job that has landed me thousands in debt which my family never expected to happen to me.
Whatever you decide to do I don't think you should rush any of these decisions. I do think supporting a transition for him to live independently on a trial basis is a good idea, and take as much time to build a support network for him as needed.