I am terrified of the potential liability and especially if there were children coming over and if there was no supervision it could easily become a disaster.

As our portfolio has grown, I'm beginning to consider what a mess it would be to have someone else disposition our assets to help care for our children if something where to happen to the wife and I.

For a rental unit which has an additional tenant joining the occupants of the rental unit thereby resulting in an increase in the number of tenants existing at the inception of the tenancy: (a) The landlord may increase the maximum rent or maximum adjusted rent by an amount not to exceed 10% for each additional tenant that joins the occupants of the rental unit, except as follows: (i) This Subsection shall not apply if the landlord had actual or constructive knowledge of the additional tenant's occupancy of the rental unit for more than 60 days and has failed to notify the tenant of the increase pursuant to this Subsection; (ii) If the additional tenant joined the occupants of the rental unit prior to the effective date of this amendment and the landlord had actual or constructive knowledge of the additional tenant's occupancy of the rental unit prior to the effective date of this amendment, the landlord shall not be able to increase the rent pursuant to this Subsection unless the landlord had notified the tenant of the increase within 60 days of the effective date of this amendment; (iii) This Subsection shall not apply for the first minor dependent child (or first minor dependent children of a multiple birth) added to an existing tenancy.

She originally moved in 6 years ago as a couple w/ 2 children,  they got a divorce last year and she stayed in the house. 

It is not harmful to pets or children either.

Currently own my company and my company builds / renovates  mainly "Children's Museums, Science Centers etc,.."    

As @Travis Sperr said, you can not personally benefit from your IRA, nor can your IRA benefit from you.A prohibited person is you, your spouse, your family that is linear to you (Mother, Father, GrandParents, children).

One person per room, no children, no overnight visitors, etc. 

We have vaccine hesitances, and doubt we will be able to put our children in public school in the state.

Even if there are no parents and children, there are often nieces, nephews, aunt and uncles, cousins and other further distant relatives, whether by blood or marriage.