Ummm 200kg's would definitely need to be added into W&B calculations, that is a substantial amount of weight no matter how many tonnes you are talking!
Yes 200kg is substantial.... if you are talking about a human!
From the Qantas webiste.
Maximum Take-off Weight 412,769kg/910,000lb
so 200Kg
= 0.05%
I doubt QF would get the thing re-weighed for that!?