Centrarchid, you're probably right in that it might be overkill. I just remember my grandpa telling me about how he used to lose newborn calves to coyotes and I can easily see losing kids and lambs, or even grown goats and sheep. These animals will essentially be our grocery store, so losing any of them is not an option. I want to see all my options, but what with the newfie literally breaking into the chicken coop, maybe I'm a little paranoid about fence failure

The cost of any single animal doesn't even compare to the cost of a single LGD, so that's definitely something to think about. The cost of our entire livestock population would definitely meet or exceed the cost of the dog, but then losing an entire population is unrealistic.
Our 45 lb dog does a great job keeping animals at bay. But the chicken coop and goat pen are literally right by the house right now. It will be moved into fenced pasture where our current dog will never be allowed to set foot without direct supervision. He won't be able to harass livestock, but conversely, he won't be able to harass the predators either when the thing they came for is out of the dog's sight. Basically the situation is, I NEED a dog out there, but I don't trust a non-LGD to live with the livestock. So it's a tricky situation, a LGD is an expensive dog, and two would far, far outweigh the value of our entire flock. But...I still NEED a dog out there that I can trust around lambs, kids, and birds.
Rhandi, that's kind of how we feel. I know a proper LGD is quite an investment, but so are decently bred boer goats and sheep. I doubt the cost of our goats and sheep will exceed the cost of a LGD but add in chickens, a pig or two, ducks, turkeys, more rabbits, and the supplemental hay and feed we might be buying it's looking like a fair trade. But then we're planning on a 4-5' pasture fence with hotwire so I can't decide if a LGD is really a good investment or not.