Ooh! another gorgeous orange roan boy
Such exciting times
I too grew up with cockers and never really considered any other breed. I first had my own cocker when my children were 7 and 5 so a bit older than yours and she was a very docile girlie so the introductions and puppy rearing were a doddle.
I'm glad I didn't have little ones when Morgan was a youngster as he was a very lively, confident, gnashing whirlwind
As long as the children realise that your puppy will need his own space and time to rest and as long as you have somewhere you can put him when he's OTT and you all need a break from the cockerdile, you'll be fine. We used to pop Morgan in the kitchen behind a baby gate to give everyone a bit of a break.
I bet the children soon learn to tidy their toys away