If you want to start it right now go ahead! Otherwise I will get to it when I get home from work tonight at 1 AM EST and describe the shop in a little more detail.
Esentially its kinda a crappy place to get trapped by zombies and they can be held up in the loft which looks over the main floor of the shop, or the basement below the shop with storage and be all surrounded. (The place has the layout of Buffy's Magic Box which is on the settings page.) :D