Who can I contact for best rates and terms for non-primary home, NEW build for STR? 

And do you currently own your primary residence?

Refinance current primary home.

I converted my primary residence into a rental property three years ago.

Lubbock has a low barrier to entry and has several backup economic drivers by being the primary hub (agriculture, financial, healthcare, material goods, transportation, entertainment) for an area the size of most states east of the Mississippi.

The primary reason is because the property is vacant and a number of independent contractors are in and out of the property thus increasing the chance of a claim or loss.

Don't need the LLC, buy it as a primary move in for 5% or less. 

I purchase as primary residence, and then move and rent when I have a new downpayment saved.

Your primary insurance policy with $300,000 in liability coverage should be sufficient in 99.999% of all lawsuits.5.

I'm not the person to answer your primary question on the quality of investment opportunity - but I'm sure other will chime in.