Gas will expire eventually and you could just hotwire one of the many abandoned cars anyways, if the roads aren’t blocked by said cars. Bullets will run out unless you find a gun shop, in which case you get guns anyways. Water purifying is easy enough to do without a machine.

My picks would be German Shepherd, Axe, First Aid, and Radio.

There’s a reason we domesticated dogs, they are useful in so many different ways like hunting, defense, and security (and companionship). Especially German Shepherds, you can see the damage they do when used by police.

Axes are survivalist 101 and some are practically multi tools despite being simple.

First Aid because infections, zombie or not, are the real killers throughout history.

The radio’s more of a gamble, but it’s your best chance to find a new settlement, monke strong together and all that. Also you can maybe stay informed on what’s happening in other parts of the country. (And it lets me flex my Amateur Radio License).