I have a Labrador. He is fab but bloody hell he was hard work as a puppy (and he was an entirely normal puppy in terms of behaviour, from what I saw in puppy class and from talking to other owners). Toilet training was fine but the chewing and nipping (biting) was a definite challenge. My youngest child is at sixth form and she very quickly had enough of his biting shenanigans, I wouldn’t want a bitey, overexcitable puppy around kids, tbh.
Managing puppies behaviour and supervising them at all times, including the very regular outdoor toilet visits and multiple night wakings for toilet visits is knackering and stressful. Adding young kids into the mix and my nerves would be in shreds. You get cabin fever during the first 4 weeks before they are able to go out properly (fully vaccinated). The advice about carrying them is great if you have a little toy breed but if you have a large breed puppy, they soon get very VERY heavy and impractical to carry about. My lad was 9.5kg at 10weeks!
Honestly, I love my dog but the puppy months are RELENTLESS.
I would voice a word of caution re these trendy mixed ‘poo’ breeds. They are almost exclusively bred by puppy farmers and backyard breeders (because they are fashionable, very expensive to buy, in high demand). Finding an ethically bred, healthy puppy of this type is very, very difficult indeed. With recognised pedigree breeds you can source quality breeders and litters via sites like Champdogs (require at least one health tested parent). Please also avoid brachy breeds (flat faced like pugs, french bulldogs etc). These dogs are so poorly bred that they fight to snatch every breath and many have to have painful airway surgery.
Whichever breed or mix you choose, please read into it properly, speak to a vet or two for advice before you buy and understand what you should be looking for in terms of health testing, traceable veterinary care (headed paper? check up on it, it is easily faked), ask how many litters the witch has had (max of 4 as recommended by the Kennel Club but many reputable breeders will only go to 3). When did she deliver her last litter? If it is less than 12 months ago, be concerned. 18months+ is preferable. Avoid Gumtree, Pets4Homes & Facebook puppies.