Dave, ignore the dire nonsense that the dog will not recover from all the trauma. My concern is more about temperament than the rehoming issues/stress. Dogs who have been horribly abused – in ways that just hearing the details would make any human throw up-- stable dogs recover.
Bless you for being willing to take on a dog who has a bite history. Can you afford to BOARD the dog til wizard can get him OR can you convince the woman, if move is guaranteed, to hold off til after the 20th OR get the original owners to hold that long? Please do contact BRAT to see if they can help. I have a friend who has Rotty rescue in Indiana/Ky area and she may have contact. I will private message you her address... never mind I called her. She said no one up that far in Wisconsin and would take time to arrange also. If Brat can't help, if they can't hold out, then you said you WOULD drive before if you had to and it may come down to that.