I know you want to help them but where do you draw the line? You have to make personal boundaries for yourself, especially if you work in a field where it can be easy for you to take in unwanted dogs. I had a neighbor a few years back who started out like this taking in a few unwanted cats, got overwhelmed, and became a hoarder within TWO years when the only unaltered cat in the house got out. He wasn't thinking of the practical aspects such as daily life with the pets or medical care. Do you know what it costs to properly Vet 7 dogs? We have between 10-12 here most times, and after 4-5 you are playing in a whole new league. Doggy viruses, especially stomach bugs that cannot be vaccinated for, spread like wildfire. You will either need to become proficient in vaccinating/medicating your own dogs or speng literally $2-3,000 or more at the vet every year.
Taking in 7 dogs at once is not clear thinking. The dogs are cute but you have to think beyond that. It gets VERY addicting to take in animals. Not saying this to be mean spirited at all ... again, I know you want to help, but doing this would not be helping & would only be placing undue burden on yourself and your husband. JMHO. No offense meant.