We are close but it is still Fiction... We need to fill the gaps between each segment.

I would think that any (digital clone) either Android or Robotic with a human based brain would go crazy travelling long term all alone, just like a human would.

It would also take redundancies, multiple Android AI's to provide backup support not only during the voyage but the building of the colony and raising the infants.

There are a lot of stories out there already but there is also always room for a new fresh take on the issue.

I suggest to write it like it's real and during the process you should get a good idea how much is currently possible or what may be fiction.