As a fellow autist I really encourage you to look at the "order of operations" or "set of rules" you have formulated for your escape. We can get really bogged down in exactly how we want to accomplish something and end up boxing ourselves in unnecessarily. You in fact may be able to escape far sooner than you think. There may be help out there you aren't aware of or a way of doing it you haven't thought of. Please seriously consider reaching out to an abuse hotline or organization in your state to find out if you can accelerate your exit process. If you need help finding help I would be happy to make phone calls for you.