I am not a certified nutritionists or docter, but I do have an online degree from taking a Human nutrition course. One trick people do, who are seriously involved in eating contest, is eat a lot of lettuce, which expands the stomach. If you are in good health, this contest should not be a problem. Just make sure that you make fruits and vegtables your main source of food for awhile to balance the high fat and carbohydrates that you will intake. Also remember to exercise and drink plenty of water afterwards to help control the amount of sodium in the body. The average amount of calories one person needs / day is 2,000 calories, which this average is changed by gender, and personal health factors. The only way to acertain that you would be able to handle this contest is to get the exact amount of calories you would be consuming and comparing it to your personal health, gender, amount of physical exercise, metabolism, any food allergies, etc.