回複：divorce agreement:您給參謀一下?

Although most of the states apply non-fault ground for divorce. The judge usually will split 60/40 of net equity in favor of you in your case. You can google child support calculation at CA and get a rough idea re. how much you can get based on your incomes and kids spending. You have a long term marriange, you might also want to consider alimony. (if you and your hu*****and have gap at the current / future earning capacities.)
Once you do the search for the possible child support and alimony, you can discount back to the present value and compare to the 15% of equity you might give up (he offers 75%, the count may give you 60%). Then determine if you want to counter offer him. Or determine if it worth going to court. Please also keep in mind the additional cost (lawyer fee and emotional stress) during the legal process
Another suggestion is that you two go to mediator who will give you advice regarding the possible split of equity, child support, and alimony. Therefore, both of you will have better idea what you will get if you go to the court. It may help you to reach a reasonable agreement.
Good luck!