In time, these edits may become your go to versions however, in order to experience what others have experienced, I would suggest watching the theatrical versions from the blurays first.
This will allow you to appreciate the originals for what they are, and then when you come to watch the expanded versions, either chronologically or expanded theatrical structure, you’ll be able to appreciate them even more.
if you watch the preservations I’ve created first, then when you come to the theatrical versions you will feel that they are diminished since it will significantly shorter.
The first godfather is a linear film, godfather Part two is a nonlinear film. No spoilers.
The versions I have created are two viewing blocks.
The first block is a chronological reconstruction with all deleted scenes running 10 hours and five minutes.
Second viewing block preserves theatrical structure, but aalso includes all of the deleted scenes. Run time 10 hours and five minutes.
I hope that helps your deliberation, and should you choose to watch the fan edits first, then I would suggest watching either of the two viewing blocks, but as I said, I think you should watch of theatrical versions first.
Hope that helps.