Perhaps I talked to a person who knew less then me or folded without knowledge I don't know. 

Would love to connect and knowledge share if you are interested.

Are there other, more cost-effective alternatives to gain similar support and knowledge?

I grew up on the east side of the town with a well versed knowledge of the neighborhood.

Are there any knowledgeable mortgage or finance brokers in the Houston area who have expertise in similar transactions?

You have excellent advice here from some people who didn't just get their knowledge of investing through a low rate, real estate risk off period.

Each week, I personally analyze the MLS, leveraging my deep knowledge of South Florida’s short-term rental market.

Now some stayed with me and that was great but some learned that with a little bit of knowledge you can do it on your own.  

You just need the knowledge or rely on those with the knowledge - proven knowledge.Thus, my comment of:  This is why you must vet the law and title office you are closing with to make sure they know how to handle these transactions.  

best of luck. make sure you are speaking to a knowledgeable person in your area as you might be getting false information