I thought the self-administered approach would be the best way for him and since he qualifies for exemptions from all the FAA practicals and writtens, that would tip it toward self-study for sure. There are short courses aimed at prepping pilots for their FAA writtens he may want to avail himself of those in lieu of home study. It would just be a way of getting the study part done faster, and they only take a few hours apiece. GA flight familiarity might still be accomplished with a local instructor unless he is current in GA aircraft.