Hi Don, the number of days one chooses to fast is, in my opinion, a personal one and how one tolerates it. For me, there are some weeks when I can tolerate more than 2 days, but in general, I stick to only 2. Personally, I think when one does more than that, it starts to become a head game. You may start to rationalize that you can eat more on the NFD and justify it because you've fasted for 4. You could completely derail your efforts. Just something to consider. Like medicine, I think there is a tendency to think "well if 2 is good, more must be better", but I'm not sure that's the case with fasting. My approach to all of this is moderation. I get into trouble when I do anything to extreme.

As far as your breakfast question, our metabolism is always on. Breakfast doesn't jumpstart it. When people say this, they are referring to the after effect of eating, which, depending on what you eat, increases resting metabolism a bit because of digestion. The "rule" about eating breakfast had been debunked. It doesn't appear to make a difference. So if you like it and are hungry, go for it. If not, don't worry about it. I'm not one who likes to eat first thing. If I eat breakfast, I typically do around 9 or 10. Otherwise I wait and eat an earlier lunch.

Hope this helps!

listen to your body, fast if you can but dont push too far. there are plenty of ways to fast and still avoid hunger pangs (i dont keep it under 500 cal on fasting days, i go for 0 ) I find fasting a much better way of toning my body then losing weight, it helps but i can loose weights on those days where I eat my full allotment of cals. But fasting shifts my shape quickly. When i started I went for 72 hours fasting as a cleanse and now regularly fast 24 hours a couple of times a week and 48 atleast once a week. but that is for me and not for you, please be aware of how you feel, if you start feeling ill, light headed etc, then please consider stopping the fast.
have you seen the doc eat fast and live longer, i think most fasters have. It hit a chord with me and seems to make sense.
as flossy says, please avoid rebounding on eating days, eat more but still be selective and pick what you eat. I HATE BREAKING MY FAST AND NOT ENJOYING THE FOOD.

Mimi Spencer, who co-wrote The Fast Diet with Dr. Mosely, had a recipe in a previous book (100 Things to Do Before You Diet) for a salad she called Sex in a Bowl: Seeds from a pomegranate, juice from an orange, one small fennel bulb thinly sliced, a handful of chopped fresh mint leaves, and chopped almonds. This is good quality, enjoyable - no, fabulous - food!