3544Quebec's masterful RTW itinerary made me realize that I can do a mini-version: I'll be taking flights on 5 airlines in order to qualify for 100,000 miles on AA; 3 or 4 flights will be round trips so I could post the returns to a different program and get a (lesser) bonus there as well.

AA: rountrip
CX: roundtrip
CP: roundtrip
BA: one way
IB: one way

Question 1: Since American is the only OneWorld frequent flyer program I'm familiar with, which other airline should I join for the second bonus? If Canadian joins the party, that seems best (earn a free ticket SFO to Canada). But who of British, Finnair, Quantas, and Cathay has a "useable" award at 25,000 miles (such as within Asia or within Europe)

Question 2: Does the "home" airline have to be one of the flights? That is, could I choose British for the three returns and earn the bonus there, even though my only BA flight will get credited to American's AAdvantage?! If this is a problem, my second bonus would be limited to Cathay or (hope, hope!) Canadian