I agree with most of the comments.
You also need to find out if Windsor Palms is not considered a 'short-term rental' and therefore a higher risk for the lenders. For these type of properties Lenders might ask as much as 50% down.
As to the LLC, you might want to talk to a CPA who specializes in real Estate.
As the other agents has noted, you will find it difficult to find a US lender to finance your purchase as an LLC because if the risk. I currently work with an international lender based in Central Florida who is quoting my UK clients 4.5% loans with 30% down minimum loan $215,000.
This is open to International buyers as well as investors. Loan qualification time is taking my clients 60-90 days but with many banks pulling back on international lending, this is a minor inconveniance.
If you would like information about this International Lender I would be happy to forward it to you.
You can buy a Florida property under a LLC but your mortgage interest rates will be a little higher than if you bought the home in your name. It might be as little as 1/4% to 1% more.
Yes, you US lenders will offer a mortgage to foreign nationals.
Most lenders are requiring 30-40% down depending on the type of loan you want to use.
If you would like me to help you find a Holiday home in Kissimmee, please feel free to contact me.
There may still be UK lenders who will make loans to UK buyers secured on Florida property (I believe that Lloyds and/or Abbey National used to be in that business, but British Mortgages Abroad has pulled out of the market). As far as I'm aware, they only worked with individuals and not LLCs, though.