I've got a situation where I need to go on a business trip (client will pay) that will have the following route:

MIA-LON-DXB-HKG-(LAX connection)-MIA

Now this trip is pricing out at a bit north of $9K in J using aa.com - so I figured a DONE4 (can I do a DONE3) is a better bet... even bought in US... Now that I'm doing that - of course I'm thinking - there's got to be a better way - why should I burn the 1 year 16/20 segment ticket for a 2 week biz trip...

What would be the cheapest way to "break" the journey, assuming I can get mileage tickets on AA and partners as the "way back" or "round trip" to make it happen???

Should I stop the RTW in HKG and then add a variety of "segments" in ASIA? and then get an R/T award on CX that's HKG-MIA-HKG? Any other thoughts?

BTW - is the mileage calculator right? Is this almost 47k miles in BIZ? Plus I'm PLAT so it'd be 94k miles?

Thanks
Nick