Okay had another play around with some cheaper countries to price came in at around 7600 AUD with first over water on AA so they should be able to ticket and sin-lhr get to go on the A380 .

waw-lhr-cai-lhr-lax-ord- sfo-dfw-yvr-jfk-hkg-dps-hkg-bom-sin-lhr-waw

with the europe stopovers being london and Cairo

Perhaps I could earn some more points in asia with trips from nrt instead of hkg but so far this is what i have come up with