If you need financial help, ask under the "Finance, Tax, and Legal" forum.

I know the IRS asks about entity vs personal members and if they're foreign or not specifically on the 1065 and other tax forms. 

Is your DSCR ratio greater than 1-meaning are you cash flowing (according to the lender's criteria of mortgage, property taxes and insurance (and HOA) if applicable).

Compile the list and then run the tax records on them all.

To add to your excellent points, it’s also important to consider the tax implications of a 401k loan.

Did the book provide enough information to get started such as contracts, tax liability information? 

Basically all rentals, even ones owned under LLC, come up during loan DD as long as you file them under one tax return as personal, that was what happened to me earlier.  

@Richard Benjamin Wilhite, @Bill B.makes some good points about loan terms and the strict identification rules for a 1031 exchange.I would add from a tax mitigation perspective that buying the largest property possible will give you the greatest amount of cost segregation possibility and at the lowest cost since it would be one study rather than several. 

While they are beautiful and get you top dollar, many come with tax abatement that expire in 5 years and will significantly reduce your cash flow once expired. 

Lien, State Tax Lien, Fed Tax Lien.