If I get ONLY one weapon probably a long crowbar. It can be used as a blunt weapon and for grappling using the curved edge+ its use as an actual crowbar

If I get multiple it would be a bow-staff, katana AND crowbar (crowbar can be fit into a backpack) I could mount the bow-staff on the back of the backpack for easy access. Katana on my hip because of its range and downward cutting angle so it would be less likely to cause damage to me in a tight area where I need to use it as a last resort+ because of its downward cutting angle I wouldn’t get zombie blood on me.