First we need to down and dump that last zombie, then barricade the building solidly. I suggest we barricade as much as possible, and use the Sayce building next door as an entry point (barricading it to Very Strong). Once the barricades are secure, Sarah can set up the generator, and I'll fuel it.
I suggest we don't overnight in the building itself. If a large group of zombies notice its up and running again, it could become a target very quickly. Instead, leave yourself enough time to return here each night.
Anything I forgot? Objections?