Since your wife would be giving up her career (you say you want an educated partner) to keep house for you (I assume you don’t want a nanny to raise your kids), I hope you are compensating her, not according to what you think your wife is entitled to earn, but the going market value of her services.
Added to that, you should add on an amount to cover lost opportunity for her giving up her career and lagging behind her peers for the period of time she’s home with your kids.
Assuming the family has two children - one under 6 years and the second between 6 and 18, the median salary or value for your wife’s work would be: $117,850 (Source: Salary.com - MomSalaryWizard Tool).
Even assuming she pays for own expenses and rent to live in your home, she should be able to save enough so she can buy her own home and have assets under her name.