The usual contract disclaimers apply: don't sign anything you don't understand, have an attorney review it if doubt, etc.  

Is there anyone local to Houston/Galveston that participates in these that needs assistance reviewing listings or with some part of their process?

Track everything you provide and review it regularly.  

For this reason, my rental has nothing but 5 star reviews, across all STR sites.

Before I bid I reviewed the PCR, which indicated no issues whatsoever. 

I haven't reviewed the documents here but I suspect there is something that will suffice.  

Surely you will have the lease reviewed/prepared by a real estate attorney and consult with a tax professional.

Have an attorney review your contracts before you sign them. 

I paid $147k for a 1-bedroom condo here (ski resort area in winter, close to Yosemite Ntl Park in the summer) and have been averaging a bit more than $3500/month gross in the 9 months that we've been renting it on Airbnb (I think we might even be able to raise that a bit as we move forward, since we were just starting out, figuring out the system, getting reviews, etc.)

Hello, I was looking for a lawyer to review my P&S agreement as well as my assignment contract for wholesaling properties.