Hmmm, I struggled with posting this, but here goes.
My overall impression is that you think you will pick 2 dogs from a rescue or shelter, know nothing about their background, but somehow they will happily live outside in your "barn," but be well socialized, guard your property by barking, but not actually physically bother people that come on your property.
Maybe I'm biased by my many years of having bully-breed dogs, that require a great deal of managing, but it's difficult for me to see how this miracle of animal training will be accomplished with any type of realiability.
DH and I lived many years on an island known for its economic disparities and crime. If someone wants to rob your property and you have outside dogs, they will poison them or slit their throats and break into your property anyway - they already took care of your dogs outside, what do they have to be afraid of? Sounds terrible but it's true. Your best bet is getting a couple of good size family-loyal dogs for INSIDE your house where they will alert you if they hear somebody and you can respond accordingly. Burglars will not usually try to get into a house where the dogs are on the inside - too many unknowns.
Toad comment - we lived with them too. An outdoor dog that behaves the way you want it to is likely to have a high prey drive. How will you train it to stay away from toads, particularly if the dogs are unsupervised on your property a good deal of the time? A dog with a toad can go from fine to convulsing and choking in about 5 minutes. You only have a few minutes to get them to the vet. What happens if on of your outside dogs gets one at night when you're not there to see it?
It seems you will do this regardless of comments from strangers on a website, but I don't think your plan will work out the way you think. You talk about your "one acre property" like it's Walton farm, but I'm sitting on an acre and a half right now (with my dog on the couch next to me, incidentally), and it's nothing more than an average sized yard. You do not have a situation where farm dogs will be ranging happily on your back 40, snuggling in the barn with the cows and horses at night - you have a home where they will be likely hanging around the patio door, dying to come inside, getting into the garbage or running around on the driveway, where a legitimate visitor to your home is likely to run them over.
Jane
My overall impression is that you think you will pick 2 dogs from a rescue or shelter, know nothing about their background, but somehow they will happily live outside in your "barn," but be well socialized, guard your property by barking, but not actually physically bother people that come on your property.

DH and I lived many years on an island known for its economic disparities and crime. If someone wants to rob your property and you have outside dogs, they will poison them or slit their throats and break into your property anyway - they already took care of your dogs outside, what do they have to be afraid of? Sounds terrible but it's true. Your best bet is getting a couple of good size family-loyal dogs for INSIDE your house where they will alert you if they hear somebody and you can respond accordingly. Burglars will not usually try to get into a house where the dogs are on the inside - too many unknowns.
Toad comment - we lived with them too. An outdoor dog that behaves the way you want it to is likely to have a high prey drive. How will you train it to stay away from toads, particularly if the dogs are unsupervised on your property a good deal of the time? A dog with a toad can go from fine to convulsing and choking in about 5 minutes. You only have a few minutes to get them to the vet. What happens if on of your outside dogs gets one at night when you're not there to see it?
It seems you will do this regardless of comments from strangers on a website, but I don't think your plan will work out the way you think. You talk about your "one acre property" like it's Walton farm, but I'm sitting on an acre and a half right now (with my dog on the couch next to me, incidentally), and it's nothing more than an average sized yard. You do not have a situation where farm dogs will be ranging happily on your back 40, snuggling in the barn with the cows and horses at night - you have a home where they will be likely hanging around the patio door, dying to come inside, getting into the garbage or running around on the driveway, where a legitimate visitor to your home is likely to run them over.
Jane