Your itinerary is around 24,000 miles so you need a ZONE 7 OneWorld award (20,001 to 25,000 miles). This costs 120,000 miles for economy, 150,000 miles for Business Class and 230,000 miles for First Class.
As
mtlockie notes, availability may be a problem for the premium cabins, but should not be too hard for economy awards.
AA does not have many options for transferring points between members. They have the option to
Gift miles or
Share Miles with a family member. However, there are certain fees and conditions that apply. To share 10,000 miles will cost US$100.