Congratulations on your accomplishments. Can I ask how you manage to choke down 6000 kcal on eating days? Even when I'm really hungry I can't physically force myself to eat that much. It makes me feel sick and my digestive system is at the limit.
That being said, I also eat significant amounts of junk food. Slice of cake is like 500-800 calories. No problem. I can do that x 3 after a meal of normal stuff. Junk is easy to throw down and calorie dense. Also, its fun to eat.
Now 6000 calories of salad and lean meats? That would be difficult...