We imagine that we are making our will for use at some time in the far distant future - 30, 40, 50 or even 60 years hence, depending on our age.
But the reality is that we need to make our wills as if we might not last the next 5 years, and then review periodically.
Wth young children, I would want Life Insurance policies, ideally. make sure that you would each be OK to care for your children until they are independent.
I would also want to leave my assets direct to my children especially when I am younger, because I have seen so many men move on fast and re-marry. Often a younger woman - and then leave everything to her. Who does not of course, ever leave anything to her DH's children / her step children. Honestly I have seen it time and time again. Even when all the money and assets had come from the first wife's parents. My friend, their grandchild, got not a bean. Not even much loved personal momentos. No one ever thinks their DH will do this....but by inattentiveness or what ever, they do.
So I would probably leave my share of the house to my DC but with a life interest for DH until ...the kids were 25, or he remarried or until he died...a time of your choosing. Also make him the beneficiary of my pension if he would need it to raise the kids (in addition to the life insurance policy) but then later, once the kids were 18, make them the beneficiary of my Will.