Check the local regulations.  

This is an establish investor, odds are they're not buying from either of us, they have their ducks in a row to replace our role of buying, managing their rehabs, and possibly even managing.The rest of the process efficiencies such as bulk buying of construction materials and passing on the rehab savings is a benefit, but this one is common among most operators and property management companies, not strictly turnkey providers.

Do you strictly want passive income?

This really all depends on how strict the co-op is. 

If you pay cash you can get any loan you want (except for owner occupied loans, if its strictly investment property).

In the city of Orlando the STR regulations are pretty restrictive.

This is regulated by Fannie Mae, and you need all purchase and rehab costs due at sale, on the settlement statement, and held in escrow to be paid to the contractors directly.

@Daniel KarbownikAs @Brian Burke elegantly put it, you must work with US securities attorney to be ensure compliance with SEC regulations.

. - Try Fiverr.com - Search for "Post Classified Ads" or post looking to hire someone .For $5 you can get your ad posted in 20-30 FREE online sites .I always try to make sure:(1) that they post strictly in the USA(2) They send you an excel sheet showing where they created an ad & posted (3) If you include an email address in your ad the renewal notice will come to you!

That's the part I'd be concerned with.I can't speak intelligently about why some HMLs require the title to be in an LLC but speculate that it has to do something with lending regulations and being a commercial lender?