Just so you know. I would rather ne staked out in the desert, naked, covered in honey over an ants nest with crows picking my eyes out while still concious than having a puppy, a 1 and 3.5 yr old together full time.
Puppy will nip, jump, kids will scream, it will steal and shred any toys etc near them.
Of course it is all doable with constant supervision and survival tactics.
Mind you, being an old fart in my 50s may be tainting my outlook, lol.