I would keep it simple.

That state has struggled to keep up with demand for decades.

You could also keep those SF's and do a refi/HELOC.

Do you plan to live in one of the units or prefer to keep it fully as an investment?

I work with a couple of different PMs there to keep options open. 

How was it possible for me to buy a property and not have the loan in my name, keep the previous interest, and not have to apply for a loan and hurt my credit?

You set up LLC to be anonymous but the transfer deed has your name, son's name, your address as public records so changing the title doesn't keep it a secret.Is daughter applying for aid or grants?

I still plan on house hacking at least one more time but one thing to keep in mind is sometimes life happens and tenants can’t pay on time.  

I own 1 profitable rental property and I am retired, keep separate records on my rental property.According to IRS guidance it states:  "If an interest in real estate fails to satisfy all the requirements of the safe harbor, it may still be treated as a trade or business for purposes of the section 199A deduction if it otherwise meets the definition of a trade or business in the section 199A regulations."

Bottom line is that you may put yourself in a situation where the best way to maintain your tax efficiency is to keep your investments foreign for the long term.