Option 3: Find a better investment at this time.Stop thinking of yourself as a real estate investor and start thinking of yourself as a well rounded investor.Pay off your mortgage: Your money is not working for you when you spend it on liabilities like a personal residence.Buy Rentals with little/no cash flow: You are speculating what a rental will be worth in 20-30 years.

Given that I recently created a Series LLC here in TX, and there still doesn't appear to be straightforward options in this regard, I figured I would bring it up again. 

+1  Real Estate Investing Data and How-to Guides - This here shows that you can filter to Multi family but I don't see it as an option as well.

This is one of the options I was considering as well. 

I’m particularly curious about:Financing Options: What types of loans or funding sources work best when scaling quickly?

On VRBO, when we set up the listing, they didn't have a "loft" option, so I think it's considered office space which led to some confusion or set up as a second living area.

FHA 203(k) Loan BasicsThe FHA 203(k) loan is an excellent option for financing a multifamily property (up to 4 units) with only 3.5% down.

If you ever need assistance or guidance with financing options for your project, feel free to reach out.

One option I'm considering is adding the equivalent of a camelback, or second story over one side of the home, adding ~900-1000sqft and 2 or 3 bedrooms. 

Then when you are done you can weigh the option between refinancing or just keeping the current loan.