Noun, While I prefer bar end shifters, one of my touring bikes has bar ends and the other recently completed touring build has STI. Integrated shifters are perhaps a better choice for a new rider.

My list of suggestions:
-For the drivetrain I followed the 20-100 gear inch range preferred by those touring with 40 lb. or more baggage.
-I built with lower tier components and reliability hasn't yet become questionable and I have no desire to upgrade, although that's been my practice on my road bikes.
-Most importantly is to have a good fit for the three points of contact; hands, butt and feet.

Your dad will be a good source of information as he has experience and knows you better than any on this forum.

Brad