I commend you for all the upgrades you've done in an effort to keep out predators however I'd consider covering the 1/4" hardware cloth with chain link or woven wire later as a precaution. Heavier predators like to jump against the sides and will try to climb it.This can tear holes in 1/4" if they're very heavy. Adding a layer of wire over top of it will help keep the hardware attached and prevent tears.
Great tip. A neighbor's dog got into our guinea coop by ripping a hole right in the middle of the hardware cloth. Killed 29 of my 32 guineas before I got out there. He'd hooked a tooth into the wire, and that was all it took for him to pull and rip a hole big enough for a hound to get in. I've since repaired the hole and covered the hardware cloth with woven wire.