Talk to a commercial lender and obtain a line of credit.

All buildings close to the beach requires piling on the first floor then you can either add 2nd or 3rd floor depending on your business plan.You can reachout to real estate agents that are predominant in the area to provide you with short rentals income report.Let me know if you need any help or info about building ground up.

I ended up hiring one of my LTR tenants as a house manager to handle all of the cleanings, turnover and provides my local eyes and ears.  

I'm having difficulty finding insurance providers in Central Texas. 

If your goal is assume a loan, I would offer the lender some sort of compensation as they are generally only paid if they write your loan, which is not the case with an assumable loan, as the current servicer will be underwriting and providing the new loan.  

To get this cash, you could obtain a line of credit on the property as it stands, assuming you have enough equity.

Based on the info you provided, the other 2/3 don't have the same mindset as you and you aren't going to agree on what to do or how to do it. 

Happy to provide more information if necessary. 

In short, a pre qualification letter is typically provided post receipt of an application and credit pull.

(There are even some who believe that the seller providing a loan to the buyer will disqualify the exchange entirely, but that's not been our experience.)The most straightforward solution is to have the seller provide a cash loan to the buyer outside of closing.