That looks great! The only problem I see is that one rack of ribs looks mighty lonely all by itself. I suppose you didn't want to commit an entire load of meat to your first cook but I think you should be confident in your ability to "Fire all of your guns at once" and load that baby up!
One thing you can do is add some sausage or brats or a fatty or two to take advantage of some of that empty space.
Thanks for the pics and story.