Oh my god no. Not with a toddler and a baby, no, no, no.
Too much looking after , you'd never be able to leave it alone with the baby, irrespective of the breed. They are such jealous animals, it's unreal.
You'll have to drag two babies out twice a day to walk it, irrespective of the weather, illness, tantrums etc. you'll have to wheel a buggy, hold a young child's hand, control the dog and pick up several poos every time.
Who is going to train it? That's a full time job for months.
Going on in holiday is a nightmare , it's either pay £25 quid a day for a horrible kennels or take the dog with you and be very very limited in what you can do - you can't leave it in a holiday cottage alone, you can't leave it in the car in the heat, you can't take it into most places.
They cost a fortune in vets fees , they eat their own poo, get fleas, worms and ticks which you have to deal with. They chew household items and wreck them. They will eat anything they decide is edible and vom and shit everwhere when it's not.
They'll bark when someone knocks at the door , waking the baby.
If you get a puppy you'll be dealing with that at night as well as the baby .
They can be bitey when teething and will painfully nip kids when playing until they learn not to.
Their hair gets everywhere and it's a full time job trying to stop it building up on every floor and surface.
Unless and until very well trained they'll snatch food from the mouths and hands of small kids any chance they get.
Do. Not. Give. In.
You will regret it bitterly if you do. It's always the person who didn't want the dog who ends up doing all the hard work.