3) I have perfect health

First of all go with I am statements as they have more power.

I am healthy.

I am strong.

I am .....


Watch this for an interesting way to code change. He also embeds codes in water.

http://www.consciousmedianetwork.com/previews/lmearpreview.htm

Your wording is lacking. When making intent statements, you don't want to have any indication of the past at all. The word "cancer" should not appear in any declaractions. In fact, you shouldn't even think of cancer, or even the potential of cancer.

Think of it like lifting weights. If you want to become strong, you do it by lifting weights. If you are constantly thinking about how weak you are while you work out, you aren't going to get very far. Same thing here.

For a much more detailed explanation of why you want your thoughts to be so specific, read "The Science of Getting Rich" by a man called Wallace Wattles. In his observations for over thirty years, he learned that people who became rich acted is if they were rich... even before they had any money. He concluded that in order to become what you want to be, you have to think as if you already have it (even when in reality you don't)

In Wattles' book "The Science of Being Well" he explains why you can't eliminate disease, you can only create health. Because disease is so psychosomatic, as soon as you think of disease you begin to create it, even when a physical stimulus for disease is absent.

http://www.quantumbalancing.com/waterbalance.htm