I think you're right on with most of the players you've picked. The only pick I absolutely disagree with is Lebron. He's had exactly one good-to-excellent defensive season. He can't be on any list of all-time best defenders. I'd replace him with John Havlicek, among many others. For wings, Michael Cooper and Bobby Jones were great defenders (Cooper made 8 all-defensive teams, and Jones made 9). Bowen deserves consideration, too.
Also, Dikembe needs to be on there somewhere. He was a four-time DPOY. Wallace was, too, although there are other centers on the list I'd take ahead of him.
Lastly, as a minor aside: Hakeem was by no means 6'9". He was a legit 7-footer.