I agree 60/40 split is typical.
Courts aim for parity so he is also entitled to housing. Keeping the house will therefore depend on whether there are enough other assets to give him his %, whether the mortgage provider will allow you to take over the mortgage, whether it is too big for your needs, all sorts of variables.
So if the mortgage provider is happy for you to take the mortgage on, and you can afford it, and sufficient cash/pension exists for stbxh, then you have a strong case.
If there isn't enough money to go around, but it is a modest house that you couldn't conceivably downsize, then he may have to wait some time for his equity as housing the dc is the priority.
If there isn't enough money to go around but it is, say, a three bed home but you only need two beds, you may be expected to downsize to release equity.
If mortgage provider won't let you take it on, or you can't afford to pay it, then you'll have to downsize.