Just about to book a fare on Emirates for my parents

Canberra-Melb (business)
Melb-Sing (First)
Sing-London (First)
Prague-Hong Kong (first)
Hong Kong-syd (first)
Syd-Canberra (Business)

Travel agent has quoted them all as Emirates flights. Am I better to get him to ticket them all as QANTAS to get maximum FF points and status credits?

They are QANTAS FF members but lowest level.

Any idea how many points this will get?