Always a gamble mate, it's one we all take, works for some, not for others, don't be a knob and bring your knee pads with you- be sure they're comfy, you'll spend alot of time in them.
The thread that you've been directed too is a great idea of what it's like. It is an experience and it's character building.
Before heading straight to the top end, maybe go south to lake Eyre, try working with Wrights Air (or named something similar). Don't rely on phone calls, be a man- drive in, dress smart and walk in and let them know you're more than happy to pour beers, paint fences, clean toilets etc to be a team player. It's all about getting a start. Also, you do t have relatively low hours- you have nothing and have loads to learn- be humble and open.
Skip.