He should tour with a friend who has a touring bike and will carry all his stuff.
You could do minimalist credit card touring on that bike, maybe get an Arkel Randonneur rack and a bag for the rear, handlebar bag for the front and don't stick any really heavy stuff into it. Just a change of clothes and toiletries, maybe a pair of sandals.
That bike looks to me to be worth more than $700.00.