#3 is okay. Visually, they are a bit far apart, but then again....the dad's a big strapping fellow, and the boy, well, he's still tiny. I'm not as fond of the degree of background in-focus-ness you have here, esp. compared against #1...the background seems to be competing a bit, with the tree behind the head, and that doggone bright yellowish highlight patch also up there in the upper right corner. Bright background patches are very distracting, the longer a photo is looked at. I would clone that out and make the backdrop uniformly "green leaves", and I think it would elevate this shot.