My Son would like to visit his girl friend, who he has not seen for the past year since she has been in the Peace Corps in Douala (DLA). Would like to use freq flyer award and stay for three weeks. Air France seems to have one flight each day from CDG. Itinerary could begin in midwest, NYC or Balt-Wash. I have 85,000 miles with Delta, and need 100,000. Two questions: 1) should I buy the 15,000 miles from www.miles4sale ($539) or pay part of the trip in cash? 2) Few award seats are available...any suggestions on how to get one?