CCC, congratulations! do you know when you start yet?
A320 - newbies wont be trained for a while. you'll start on the fokker 50 and 100
Overnights - Geraldton, Broome, Kununurra and Argyle, and day rest in Telfer and Cloudbreak (the odd one here or there in West Angeles and Baramunya too but not often).
Bidding - you get 4 requests a roster, but its only for an Early Shift, Late Shift or Day Off. you can't ask for specific flights etc.
hope this helps!