My mother is about to fly a CIRCLE PACIFIC 29,000mile ticket from ASIA-USA-SOUTH AMERICA-AUSTRALIA-ASIA in Business Class (MY-JL-AA-LA-QF-MY) and I am trying to figure out which is the best airline to credit the trip to.

Current Oneworld status is BA Bronze (from a previous trip round trip on BA Business Class), but have no plans to fly BA this year, so can't renew status...

Important factors are:
Maximizing Mileage Received & Good Award Redemption Rates (BA is pretty good for us for this)
Getting Oneworld Status to be able to enter lounges on economy class travel (BA is not good for this because of minimum sectors)...



Questions
For members asking for information, to help people to assist you, can you please provide:
(1) What is most important to you in a FFP?
free lounge access
good award redemption rates
better award access
(2) How many miles do you usually fly each year & in what class? How many flights/sectors?
Reply: Not consistent...
(3) What types of fares do you usually buy?
(First, Business, Premium economy, Economy, cheapest)
Reply: Economy & Business
(4) Can you choose your airlines and/or class of service? Do you travel for work and/or pleasure?
Reply: Yes, Travel for Pleasure
(5) Which routes and airlines do you fly most often?
(US Domestic, Transpacific, Kangaroo, in Asia etc)
Reply: Asia, Australia, USA, South America
(6) What is your home airport?
Reply: MAA
(7) Do you have FFP status of any kind in OW or other airline? What is it? Do you have any miles banked in a FFP?
(AA Executive Platinum, QF Gold, UA 1K, LAN Comodoro, etc)
Reply: BA Bronze
(8) Preferred Airlines? Most common Airlines flown on?
Reply: JL, CX (but don't fly on them enough to keep status)

any ideas? thanks!