If 2030 is your goal you have time to think about if this is what's best for you. I believe there are some well documented cases of Vietnam Veterans returning to Vietnam later in life to find closure and healing so there is certainly precedent for that. But honestly at this point in time it sure as hell doesn't seem like Afghanistan will be as safe or open to foreigners as Vietnam is. Two very different cultures and wars. It goes without saying and obviously you know this but if there is significant safety risk I would say staying home and continuing your therapy is probably the better option than risking your life and the wellbeing of your family.