Cost to build is $350K (I am managing it all myself and calling in favors around the city to get low rates on materials and labor).

Do yourself a favor and find out for yourself.PS - We have zero affiliation with NR, Jim piccolo or anything in Arizona. 

Each week, I analyze the MLS, exploring cities and towns across South Florida to identify areas favorable (or not) to short-term rentals.

Here's the problem: They are not a sustainable asset for most to own; they are difficult and costly assets to exit through a sale; if you achieve favorable refinances, you may be able to use those funds to buy other (hopefully better assets) but are now faced with operating highly leveraged bad assets. 

Last but not least....A few members in replies have already mentioned why it makes sense to hold…….I very much appreciate ALL FEEDBACK, however I think it will be helpful to provide some added context as to why I am absolutely certain (and my CPA’s are convinced as well) on my decision to liquidate the entire portfolio and onceAs I educate clients on daily, income tax brackets as well as long term capital gain tax brackets in our country are more favorable right now than they've been at any point in the past 80 years.

Avoid PMI and then go to a local credit union and get a heloc after closing to gift the money back.Have this as a tool in your tool belt but pursue use of the 3.5% FHA, knowing that you will be at a competitive disadvantage if you are competing with non FHA buyers, then you can call in the favor from your gift person.Just know that if someone gifts you down payment money, your bank will require them to sign a letter stating that it is in fact a gift that doesn’t need to be paid back.

If cash flow improves, it might make sense to hold onto the property while expanding your portfolio with new acquisitions.Reinvestment OptionsIf you sell or pull equity, focus on markets and property types that align with your cash flow goals:Out-of-State Markets: Research markets with strong rental demand, favorable landlord laws, and higher cash-on-cash returns.

There are other areas that make good STR's that are overlooked by most in favor of the trendy areas. 

They could self manage for several years, using the rental income, until the next phase of their retirement.If they have a decent amount of financial discipline, they may want to get a HELOC now before they build to get the most favorable rate.

I'm in favor of a higher bar before posting but I think it's a minority position.