I think normal speed zombies are good. They could sprint if they want but they’re not going to suddenly turn into track stats. and world war z superfast zombies are just... no.
What kind of prepping do you think you’d do?
You can be whoever you want to be. In my story not every bite necessarily transmits enough virus to cause an infection, so you could tell no one then turn out to be fine.
La Super Rica in Santa Barbara has the best chorizo in the USA (according to Julia Child) I used to live like 6 blocks from the place. God it was so good. And cheap!