Her husband left with their infant child when their lease was up but she stayed because she knew she could.

An example would be a job change that is far from your current job location or if you can prove your family is growing (maybe marriage certificate or birth certificate of a child).

If some child gets hurt, they will almost always come after you too, even if the tenants have renters insurance. 

Hey @Cody Noblin congratulations on your soon to be newborn!

Fair market value is still fair and they know it.Do not wait six months because by then you will know that Jane cares for her sick mom and is having car trouble, Suzy's boyfriend is not paying child support and etc..........and it will be harder to raise then.Just bite the bullet.and if you raise all of the rents to market value then you do not have to worry about chopping up the water by percentages.

I currently own a house with my wife with a child on the way, so househacking isn't an option.Does my plan so far seem adequate?

I figure real estate is much like having a child, no one is ever “ready “.

Has anyone every bought a house at a trustee auction with child support liens in California?

I have a wife and newborn currently so uprooting my family too often is not my main goal.  

A lot of employers are used to splitting the pay someone earns and depositing it into various accounts such as child support for various baby mommas or savings or retirement accounts.