You should eat until you are not hungry anymore. The number of calories depends on your height, weight, metabolism, daily exercise, etc.
It is possible to lose 11 kg in a month by eating chocolate. I don't say it isn't. But while it might work for some, it doesn't work for everybody. Moreover, the point of Atkins is not only losing weight, but learning new, healthier eating habits. This involves giving up chocolate, at least for a while, and concentrating on natural, unprocessed foods.
Do induction by the book for two weeks, so that you are then able to determine as accurate as possible your level of metabolic resistance. Then climb up the rungs and add foods back. In OWL, you will be also able to have a piece of sugar-free chocolate every now and then (make sure it is sweetened with one of the allowed artificial sweeteners or sugar alcohols... but keep in mind that sugar alcohols may affect blood sugar levels in some people).
Are you having lunch at all? I'm not sure how much salad you have for dinner, but you should be eating 3 cups of veggies a day. A cup is equivalent to a 225 mL cup of coffee.
I'm sorry, but I can't figure out what "sourges" is/are... so I have no idea if it's legal or not.
