Thanks for putting that together as a general guideline - I can tell you worked hard at it.
As for live feeding - I have never, ever stunned live prey - it's simply not necessary, and it it more dangerous to the snake to put a frightened stunned animal in with it. If feeding live, feed live - no stunning.
Well, I don't feed live and I think you're probably correct. I heard that some people do it, it probably isn't necessary as long as you have something to lessen the chance of your ball python getting hurt.