I am so undecided on what to do, use QuickBooks or create a spreadsheet to manage expenses, rental payments, and investments, etc... 

Those fixed rate mortgages were 4.25% and 4.75%, both of which I'm very satisfied with.  2 others were bank foreclosures, which numbers are rising year over year; therefore more selection and a seller who MUST sell. 1 was bought at Sheriff Sale and the last one came from a property management company who had managed property, where the owner needed to cash out to pay for their child's college tuition. 

A divorce can change finances quickly (child support, legal costs, etc.).Think about your long-term flexibility.

BY HUD rules children of different genders require different bedrooms, therefore a single parent with a male and female child qualifies for a 3 bedroom unit. 

PLTR.... is the poster child of irrational valuation.

What is the claim - that someone is going to sue them, or kidnap their child, or what? 

You may desire to look into ways to increase your leverage and use the money for other investment opportunities.You do not state what state this is, but if it is CA the property 13 reduced property tax is only maintained if the home was the primary of the deceased and will be the primary of a child (this was the case for my brother and he is still living in the home at a tax rate that is based on a 1977 purchase plus 2% max annual increase).  

You create a parent LLC that owns separate child LLCs, each holding title to one property.

I took a 15 long ago because it matured when my child was going to go to college so we could either sell it to pay for college or leverage it knowing it had no debt.

Sub fields in the applications are called "child fields" WTF is that supposed to mean?