I've been using 400' of Premier 1 PermaNet for 3 years, move it regularly and it has held up to a lot of abuse.
I've heard you can spray Apple Cider Vinegar in place of Round Up. I don't bother we just mow very close to the ground where we place the fencing. We move the fencing enough that it's not really that big a thing.
I initially bought a solar powered charger but we went through a period of drought here and with 48" PermaNet, the charge was very slight once everything was toast, meaning grass and ground. I recommend the Kobe charger, it is wide impedence and will really work a treat on anything. We actually had to water our fence line to keep a charge going with the solar low impedence charger. Wide impedence maintains a consistent charge from beginning to end of fence, will handle dry conditions and a weed load on the fence pretty well. Low impedence charge will weaken over the span of fence, so you want to really pay close attention to what the charger can handle lengthwise.
I would recommend if you are going to go solar, invest in as much strength as you can. Premier 1 has comparison charts to help you decide what you need under your conditions.
We have packs of coyotes and fox around here. Pretty much every evening for the first 2.5 years we had chickens, the coyotes came screaming into our yard to see if they could score a chicken dinner. They still come through periodically but we haven't lost any birds, even when using the low impedence charger. I don't know why they don't jump the fence here but I've never had that problem.
We had some trouble with hawks until we added ducks -- we have one black duck (crows are natural predators of hawks) and I guess that, plus, a new gigantic Buff Sussex rooster has been enough to solve that problem. He's been on the job for a year and not one loss during that time. We didn't have a loss before, but we did have a Buff hen torn up protecting chicks. She saved the chicks but was in pretty bad shape herself. Happily she recovered.
Edited to add, we did lose a couple roosters during the Buff attack, who obviously died trying to protect the flock. I had forgotten about that, but then, I wasn't the one who found them. My kids reminded me about the poor guys.