Welcome! We have lots of Aussies here. First you have a huge advantage in being young, bc your body is very forgiving and you will reap the benefits faster. If you want to lose weight and not have cravings, you'll be better off getting a good protein breakfast (40+g), avoiding most fruits except berries, and try to stick to 2-3 good meals. Primal is great, but it can be abused or misused, and often misunderstood. Get Mark's book, or download his PB101 for free. Good luck.
I was a sugarbaby; meaning since I was born I was given lots of sugar, and ate lots of processed foods, especially sweets until I was into my thirties. Most people in the west were/are sugarbabies.
“How does today’s youngster educate his sense of taste? By submerging it in a sea of sugar from the time he gets up to the time he goes to bed.” W. Root and Richard DeRochemont, Eating in America (1976)