Sorry to bump this.. had one other followup question.

Looking into our options for getting back to the US after the trip is over. I'm guessing that late july/early august tickets will be running around $800 o/w.
As we're likely going to use miles to get to CPT, I thought of combining this with our return into a AA Oneworld Award. However, I can't figure out if the following is legitimate. Does the LHR-JFK return violate the two stopover rule?
JFK-(o)LHR-CPT//LHR-JFK.

If we can't work it out with miles (or without burning 90k for a o/w award), we'll probably just buy the ticket.