I've not done one single all nighter in my life. Treat Uni like a job and you won't need to. My grades are well within the top range for me to never consider doing one. That being said, I think i'm the only one from my year that hasn't...
Architecture in NZ is going the way of the rest of the world and dropping its base Architecture degree to three years instead of five and changing from a BArch to the BAS. You still need some sort of Post Graduate degree to be eligible to register and call yourself an Architect.
Regardless, you will still need to do the five years of study here if you want to get registered any time soon. In the case of Vic that means doing the Masters course.
I believe you can still get registered eventually with just the BAS but I can promise you that it will take a very long time. Architecture in NZ is quite an old boys network, and they don't like people who aren't on the same level as them (meaning anyone who hasn't done five years).
I completed a BDes and worked as a CAD Monkey for a few years before realising that being the bottom of the barrel was not where I wanted to be in the office. You *can* make money staying a monkey but realistically you won't be making that for 10-15 years, whereas being able to be called an Architect (albeit unregistered) gives you much more power in the money negotiations. For the sake of example, I started work as a CAD Technician and was doing more work than a graduate Architect for about half the pay. That really irked me.
On he subject of being registered, it takes a lot longer than people think, especially if you work in a firm which doesn't get a large selection of jobs through its doors. Don't worry about getting registered until you are made to, or you want to have your own business. It's about $3k from memory and if you fail the examination, you don't get any of that money back and you can't re-sit it straight away. It isn't for the faint hearted.