AAdvantage awards have no surcharges on partner carriers, except for travel on BA/IB. (Surcharges for travel on BA are high; those for travel on IB are modest.)

If your business travel to/from the Philippines is in Business Class, you could quickly attain oneworld elite status by flying CX, JL, and/or QR, and crediting to the Iberia Plus program. Iberia Plus Avios can be transferred to both BA and QR if/when it is advantageous to do so.

But if your international leisure travel is likely to be to Asia, you would probably be better off crediting to AA, and redeeming for award travel -- with no surcharges -- on CX/JL.