Meyero,
Congrats on getting Actuarial Co-op!
You must have rocked in the interview, Hope to see u next year.
(I'm the lost dude that helped with the interviews btw =P)
Joo,
Just a few words about being on the shortlist. In my year about 30 people were shortlisted. 2 got accepted. BUT, if u do decide to enrol in actuarial studies at UNSW, they'll keep the shortlist so u'd be preferenced should any existing coops drop out (and trust me, they DO drop out). So, it's kinda ur call. on average about 2 coops drop out per year, and if they do drop, u'd have a good shot at the coop, since they keep the shortlist.
Hope this helps