Stay on it! It seems like too many goals at once, but you are on the right track. Use your desire to get fit to help you through the cravings. Drink a gigantic glass of water when you crave a cigarette. A bag of light popcorn is your friend in both the health and quitting world. you can eat an entire bag without feeling guilt, and it keeps your hands busy.
Don't buy cacky food, and you should be able to eat through the odd craving without getting fat. Hop on the eliptical for the 5 minutes it takes the craving to go away.
You can do it.