Ok, so how do I manage to book at this price (in F)

TIP->LHR 11 June
LHR->SIN 3 Dec
SIN->SYD 7 Dec
SYD->BKK 15 Dec
BKK->LDN 15 Jan
LDN->TIP whenever


I.e. take TIP->LHR soon, then book with stop over in SIN and SYD and BKK?

I don't mind whether I book with AA/BA/Opodo, who-ever I just get myself a sweet F to SYD

Thanks
G