mutt,
First it depends on where your friend is looking to learn. Weather can still be a factor in the Summer.
Five weeks is a good timeframe, if your friend is going to train full time, flying twice a day (2 hour slot per flight), with some groundschool each day.
It can be competed in less time, but that means more pressure to finish the course.
Happy Flying,
Capt. Richard J. Gentil, Pres.
Naples Air Center, Inc.