Is Anakin going to be a young adult/someone in his late teens, or is he going to be a kid in your Episode I? If you’re going to make him a young adult, but want to preserve the whole “attached to his mother” aspect of the original TPM, I’d suggest make he be responsible for Owen, and leaving Tatooine = leaving Owen alone. That way, the line “he didn’t want you to follow old Obi-Wan in some damned fool idealistic crusade like your father did” makes sense, and it ties the trilogy in a better way.
I’d also suggest making Episode I Obi-Wan AotC Obi-Wan, except that he’s not that wise.
If you’re going with the “Godfather II approach” though, I do not know how my suggestions would be of any use. 😄