I was going to put ethernet surge protectors on both sides. My plan was a PoE switch (Ubiquiti flex) with two cameras and an AP, powered by my main switch which

I was going to put ethernet surge protectors on both sides. My plan was a PoE switch (Ubiquiti flex) with two cameras and an AP, powered by my main switch which is on a UPS. How much safer is using fiber, and giving up on battery backup? I'd also have to redo a bunch of power; the shed does have 120V but it's switched from inside the house and hardwired to a couple outdoor lights (on posts), so I would have to basically run a new power line either to the shed or to the lights; something I might eventually do but wasn't planning on this year.