I already have a plan for a Zombie Dooms Day.
1. My party size will be 8, including myself.
2. I need 3 other guys (I'm a dude) and my wife and 3 other women.
3. Age req. Men need to be physically adapt and able to lift heavy objects. Woman need to be between ages 16-25. Now the reason for the woman being so young and not a real defining age for men is because men can reproduce at any age, women have a cut off time, about 35 before the babies start to have mental and physical problems.
4. Head to a flat land area with really good soil for growing crops.
5. Close off an area with wood for temp. walls. Start building a fort, however you need to dig about 8-10 feet down and put a 2-3 inch steel plate under your fort. Then fill in with 1 foot of cement. This prevents zombies from digging and coming up from the ground. Then fill in the area that you just dug up. The goal is to have 3 inches of steel and 1 foot of cement under your entire compound at all time, this means your wall that is made up of steel and cement. Once you secure a fort, which you can expand at any given moment, start reproducing and growing food again.
6. 4 men, 4 women. Each year the women will reproduce young, from there the men will switch to a different mate and reproduce. The children would have to rotate around and not mix genes until they past the 2nd generation then the genetics should be far enough that mutation shouldn't occur. By then, I will have died off and left our children a chance to repopulate earth.
That's about a quick sum up.