The LLC was created for the rental property alone.

My lender advised me to run my investing business as an LLC, keep the property in my name, and then put both the property and the LLC in a trust.

Also, for the second part of the strategy, we would transfer the duplex into our real estate property investment LLC after year 1 and have my sister move back into the single-family house as her primary and rent out both units in the duplex as short/mid-term rentals.

Would simply owning these properties through an LLC (with an associated business account) be enough to benefit from this? 

In the last 12 months, my company (LLC, sole owner) did over 1.2m in revenue, and i have cash to put a good % LTV down.  

I live in Virginia, and need to create an LLC in Florida.

Right now, they are under my main LLC with a lot of my more high end property.

Was thinking of moving the Duplex to an LLC through a quit Claim, but  not sure that will enhance my buying ability. 

So in order to get private funding for my next investment property I needed to register an LLC as they don’t lend directly to individuals.  

You will have to refinance into an LLC/Corporation/Trust that your wife owns and she will be the guarantor.