I have been on PB for a few weeks, and I enjoy it as well. I try to buy organic whenever possible, but I am not going to make myself crazy about it. An egg has the same overall nutrients as far as protein, fat and carbs, whether it is organic or not. However, I am sure there are some positives to cage free eggs that go beyond the normal macronutrients. I am sure the same applies to organic and grass fed beef.
I think the goal is to get to as close to being primal by selecting foods that are in the most natural state. Do you best, but don't drive yourself crazy if you eat a few regular eggs or meats. Take it in steps.
That's just my opinion.