He's the father of my children as well.

Had no children. 

My wife and I had to help several of our children who were fighting medical problems and bills.

He has trained his children well, they are well behaved, and gracious. 

This is something that could be to your advantage if you own a home in one of areas since you will rarely have a shortage of a tenant applicants who want to live in these districts.On another note, neighborhoods with SFRs in Dallas proper such as the M-Streets, Lakewood, Knox-Henderson, Munger, Bishop Arts are in demand as well, but you will see more of the young professional, dual income no children types living in these areas.  

Solid military family with respectful children?

If you want to remain anonymous (varying levels of privacy) and want to give even a professional private investigator a hard time, check out the bookHow to Be Invisible: Protect Your Home, Your Children, Your Assets, and Your Life by JJ LunaIt's the go-to book for privacy protection.

The man who owned the house passed away and was married and divorced 5 time with three children. 

Since it would be a rental, my first rental,  I am concerned about the renters and children that would most likely be playing in the basement.

I am being told by my parents and my in-laws that I am crazy to be thinking about doing this, especially with 3 young children but I think it would be crazy not to.