Loadout request. Let's pick our own loadouts, as every weapon is "strong" when used properly. Anyways, the armors can remain the same for survivors.
I'm not sure how weak the zombies would be: Titan Armour has comparatively little HP, and the Blademaster/Thunder Ability is actually a VERY powerful combination when paired with the Windblade on any non-Perseus Armour. The Cutter has only 1/4th of the Windblade's power, but the Titan is also about 1/4th of the Perseus's Armour's HP (and has even less HP than the Thunder Armour). Long story short, if the "zombies" get close to the Survivors, the Survivors will die in one or two hits if the Thunder ability is active. You're better off restricting the amount of speed the survivors are allowed to have on their backpacks, and giving the zombies either the STK or the FLOAT -- they're both faster than the Blademaster, but they will also be weaker overall (the Blademaster's 40% damage bonus will also multiply the armour power bonuses, that's why it's so powerful).
I'm at a Japanese Restaurant right now, maybe in half an hour or more? Love the game mode, but I have to eat :/ and in response to what you said undead, I have more eggs that are unplaced, no worries.