Hey, hoping you feel better soon. My mother has Gastroparesis, so I totally understand if you're feeling too unwell to post. We're still here!

As for suggestions, there could be a duo of selfish, somewhat unstable survivors who look to take all of our characters' stuff and prosper, or maybe they're just nuts. Co-GMs can play those characters. Then there's the chance to play around with the weather. We could create a storm that tears through our survivors' environment, makes it harder for them to spot the undead or find suitable shelter. 

I think our characters' main goals are to survive and find a safe place to hole up.