A good survival plan is to nuke a big city, like Houston. Wait a few weeks for the radiation to dissipate to non-lethal levels and go to Houston in fallout gear, build a fallout shelter, and live there for a few years. After you leave the shelter a few years later, all the zombies will be long dead.
You will have a rather large area at your disposal, with plenty of wreckage to defend you. Zombies will probally never come to Houston. All of them in Houston died, and any that tried to come died because of Radiation. Every zombie within 100s of miles will be dead.