The most common portfolio style loan in Texas is a 20 year adjustable rate loan.

What I would suggest is to spend a disproportionate time on what your ultimate goals are and that way you can work backwards to see which strategy gets you there fastest.One unique aspect of multi family is that the assets are substantially valued off the Net Operating Income so in order to see appreciation you should have an achievable plan for increasing income and decreasing expenses.

Early, the fact you own over 1k units is an american dream and a true blessing congrats.My goal: 100 units by age 40 ( 14 years to achieve this)I believe 100 units is when you become truly "Rich" and "Wealthy" 

So whatever you did with the remaining $35,000 (after penalities and taxes) would have to be worth at least $53,500....or a net profit of $18,500 (52.8%) to yield the same return.How confident are you that you could achieve that ROI?

The standard 401(k) style plan with a $19K individual contribution and perhaps an employer match is what most folks have available. 

And, there are 100 other ways to achieve asset protection. 

A few suggestions to achieve anonymity is to buy in your name and then transfer into a land trust.

The house has a low tech Copper wire landline to achieve this.

I can lower both my interest rate and my monthly payments in order to achieve positive monthly cash flow.

There are over 300 places in the general area so you want to offer some great amenities and style to stand out.