i doubt they will ask, just make sure its the first address u put (when u create the application) cus they assess only once (if ur planning on doing that, hypothetically of course).
It's also automatically assessed by UAC from what I've heard.
i think i would say its a good foundation for a lot of my subjects (particularly humanities). But if you want to do well you will have to go beyond it (obviously using more than 1 resource). I don't think I would buy it for $470 though but that's just my take.
mysydney should have emailed you if youre eligible, given its your first preference and you reside in an eligible area. Check the website to find the notification dates.