My apple farmer just stopped in. I'm probably repeating others or what you've already read, but here it is anyway;
He said to wait until winter and prune off all the vertical growth. I've ridden through his orchards before and apple trees kind of look like mushrooms. They are wider than they are tall, and not all that tall anyway. So that's the look you are going for.
He also said you HAVE to spray. He sprays about every six weeks, both an insecticide and a fungicide. You can buy large netting to wrap around the tree for bugs, and he said they do in China due to cheap labor, but if you live in a damp or rainy climate you will need the fungicide, otherwise you get absolutely no shelf like after you pick the apples..... about three days before they start rotting, but they are OK to eat right off the tree. If you are into organic, they do make organic sprays now, but they are very expensive.
And that's what I know :^)