I have three listings, 1. unit with a pool and hot tub, 2. unit with a hot tub, 3. both units together as a 12 sleeper.Gross monthly income (after booking channel fees) for the first unit over a 7 month period was $7309.Gross monthly income for both units over a 14 month period is $11,297 (after booking channel fees) As a long term rental the combined rent would be in the region of $5500.Is it possible to sell the property based on the income generated by the STR business or would the value always be based on bricks and mortar comps? 

You could also look into regional banks or credit unions with experience in real estate development for middle-ground options.If I were you, I’d spend some time shopping around for the best rate/terms.

While this may be risky in other ways, you'd be able to continue to grow your portfolio without taking as much equity from your income producing properties and possibly sustain your continued cash flow with them. 

My advice would be is to talk to multiple investors who have real world, actual success-based experience in flipping over a sustained period.

In my area, most illegals live in trashed-out rentals with multi-generational family members or co-workers, so I doubt the housing market will be greatly impacted, at least not in my region.  

Do just want to reiterate that this will be very regional! 

How Ford’s BlueOval City Project Impacts Real Estate: A Setback and Opportunity for InvestorsFord’s massive BlueOval City project, a planned $5.6 billion electric vehicle (EV) manufacturing campus in Stanton, Tennessee, is a game-changer for the region.

The main factor is will rents cover the debt liability and can you sustain 3-4 months of no income to cover the debt? 

@Drew SygitOh, I forgot to ask - any free tool recommendations for determining the various classes of neighborhoods in different regions?

I am humbly of the opinion that the Sun Belt is entering a phase of more moderate growth and that the 'Rust Belt of Old' is the next region up to bat.