Many people like super flat world because it is made for building structures. But what if you could make a super flat world in which you could play survival. I have studied the minecraft block ID's, and the patterns in which allow block to be added to super flat. If you want the perfect combo for survival mode copy this code into the super flat bar and survive to the best of your abilities. Note there may not be trees on super flat so you need to have cheats to give yourself wood. The code:

"2;7,2x129,2x73,2x56,2x14,5x15,5x16,5x89,5x49,5x13,5x24,10x1,10x3,2;1,village"