Are there any regulatory restrictions generally or in Texas?

I am not in any hurry to rent to a first warm body as I actually have a job.The current rate closer to 3k for a 2 bedroom and I am well below it with the price hike.I have a garage, pool, fitness center, walking trails, custom spa shower, balcony, patio, gorgeous sunset views as I am atop of a hill and surrounded by trees.My place does not look like a rental.It looks like a homeowner lives there.

The QI is the guide through the regulatory maze that makes it easy for you. 

You should then be able to verify their license with the regulatory agency in their state and also likely here: http://www.nmlsconsumeraccess.org/. 

Smoky Mountains is a good traditional STR market that probably has minimal regulatory risk compared to many other STR markets, and also has consistent demand as the area is pretty much built solely for vacation and hence vacation rentals

As for painting the vinyl windows, go talk to someone at the paint store and ask them what it takes, and if you're going with a dark color on the body of the house, you can do the vinyl a darker color, they don't have to be bright white.

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If you want to invest in a small town business (like a STR portfolio) it will pay to be connected or part of the bodies that oversee licensing of your business (self-interest). 

The regulatory compliance is hefty. 

No body is perfect but after working for the other two they could be close.