I think much of what I would say has already been said. If I repeat some, it's just to reiterate the importance...

You've already said you won't be introducing them. Good! Please don't, accidents and emergencies can happen in the blink of an eye. I won't continue to beat that drum...

A secure enclosure is a MUST. You definitely don't want a situation like this on your hands... pythons.net/forums/showthread.php?255374-MA-Police-shoot-boa-that-constricted-puppy

I would also suggest keeping the dog out of the room the snakes are housed in, just to make sure their curiosity doesn't create a problem. Make sure heat lamps or CHEs can't be knocked over, the enclosure itself can't be knocked over, etc...

I had dogs most of my life, but my girlfriend was bit in the face as a kid and is NOT a dog person. So, no dogs in my future. We do have a cat and ferrets though, and they don't ever come face to face with the snakes. If a snake is out, the cat is put in another room.

Good luck, keep us posted