I think maybe you need to ask yourselves a few questions, or perhaps you have already but would be good to know, so folk can advise.
Do you all work, part time/full time? What arrangements for leaving the dog while you are out. Be aware that puppies can't be left for very long at all intially, a couple of hours maximum, and not at all for a week or two ideally.
How old are the DC, can they help with walks? Are they able to be left if you walk the dog yourself? What about walking the dog in the snow, wind, rain etc, are they ok with this? Do you have any anfter school clubs to consider, I was here there and everywhere when the DC were at primary, which is a factor if you have to leave the dog again, but the DC might be older?
Any dog, rescue or puppy will require a lot of input intially.
Can you afford a dog? Food, insurance, training classes, medical bills?
How much exercise do you want to provide? We have spaniels and I walk for two hours a day, plus training with them. That's fine for us, but you might want less or even more than this.
If you buy from a breeder, buy for a reputable breeder and do your research thoroughly.
How much time to grooming? Even dogs that don't need grooming will need clipping etc.