No matter how hard you try, there will always be a typo. I utilize all the methodology you suggest and more! Yet, I have readers who write to me and say, “Oops. Found a typo in your email or blog post.” But when we write a book, we must, indeed, do the work of self-editing and then hire the professional editor(s) AND then get a professional proofreader. And then there will likely still be a misteak. (LOL. That one was intentional.)