Depending on what your goals are, of course yuod want to drop calories down. Go to the lobby of this forumn and a sticky article at the top is MR.X's CKD worksheet. Go there type in your info and it works the numbers out for you. The nall u have to do is get the foods to hit those numbers!
Pretty Easy....
The problem can be the blandness of food choices....
I eat, chicken, steak, porkchop, roast beef, low carb ANPB, peanuts, almonds, sunflower seeds, pumpkin seeds, once in a while motz cheese sticks (but u have to be REAL carefull with dairy products.) and egg whites, and protein shakes.
Reccomend you up the cardio and keep training hard with the weights.
For the first couple days into ketosis you may feel a little slow or have headaches, thats due to your body changing over and using a new source for fuel. Its really not that bad as long as long as u can cook your meals and have time to eat 6 times a day. I like to carry around some PB with me if I know I may miss a meal. (some people can't because they will eat the whole jar, it's addicting :-D )