I would probably go for brute force, rip apart weaponry. I'd hate to think I downed a zoombino with a 9mm hollow point, only to turn my back and have the zombie have its own person second coming.
I would use a shotgun most like armed with a buckshot, slug and illegal flechette rounds. Sure the flechettes might be illegal now, but if you're hardcore into fighting the undead, you would've been stockpiling them long before they became illegal. The buckshot whould have widespread stopping power, the slugs would have massive small contact area damage, and the flechettes would just tear through anything they hit.
At my side, I would have the 9mm, modified to fire automatic, glock. And as final short range, I would have a Desert Eagle .50 AE.
For long distances, I would by toting the .50 Barrett model M82A1. This rifle would keep the devil himself from knocking on your door. The round would go through one zombie and plunk itself into the next.
Also, I'd leave a couple of M4A1's laying around, with incendiary ammunition if possible for the mid range combat.
You should be ready...
For the First Wave at Least.
