Ok that gives me some good insight. Thank you to all who responded! I guess I'm just going to do it based around 1 area of my school and just have it to where you can see the buildings in the distance:(...

So the title says it all. I would just want to know the biggest unit area map I can make. I'd like to make a zombie map of my school's campus (Washington State University - 1,742 acres). Sorry if this was posted somewhere else! I'm a newbie to forums...