Humm hard to plan really until you know what kind of zombies you had to deal with. Slow zombies like NOTLD zombies are no big deal walk around them and if a few to many bunch up just pick up a blunt object like a brick flail and go to town. Super fast zombies/ghouls like L4D that don't react unless they see you. Hide indoors during the day, night vision and pick um off in the dark. Blind zombies that react to sound like in HOTD just crank up a cd player really loud to draw them off you and or make friends with someone really obnoxious that just won't shut up and make a get away while they are eating him. So really it's impossible to actually plan for every contingency.
Funny, it sounds like you just started. XD