Overall I am very impressed with your website. I've had problems with sticking with a paleolithic diet, your three stage proposal might help me overcome the inertia.
Okay enough of the roses, I also have some thorns.
I may seem like a Grammar Nazi, but it takes away from the legitimacy of the site, I feel. On the stage three page, in the first paragraph, you write: "You would of lost excess weight, optimised your energy levels, and sharpened your mind." The first part should read: 'You would have lost excess weight...'.
I am making this last suggestion in complete ignorance of Australian and International law on this matter. All I know is Americans are more litigious than other countries and if this were an American website, you would be at risk, so at least look into it. For your protection, I think you should have some statement that says to the effect of "this is not intended to cure disease (I know it will) talk to your doctor if you have a chronic medical condition". That's what all the websites say, we don't want anyone going into a diabetic coma and coming after you.