I wonder if what your doctor was referring to regarding 10-15 years, has anything to do with "extended criteria" livers. Sometimes the "extended criteria" livers may come from an older person, they may be a fatty liver, or they may come from a donor who has been exposed to Hep B/Hep C, etc. Maybe with an "extended criteria" liver, that may be possibly what he/she was referencing? You could always clarify this with your doctor.
Glad that the evaluation went well
What did they say regarding possibly relocating there temporarily? Did they give you a time frame based on your dad's evaluation/bloodwork, etc,., how long his wait will be?