If we do our own startup, do we: 

Focus on finding a safe-haven and fortifying it
Start off with a safe haven, focus on raiding and gathering gear
Become a mobile operation, scavenging for supplies, and avoiding the creeping doom
Mobile op, but not just scavenging, actively working to combat the undead
Some combination in between

Any is fine with me, and they all have their own merits, and of course, their own branches of options. What do you guys/girls think?