-The mention of syndication being less risky than HML...I'd suggest it is more risk, possibly much much more since you don't know whether you are good or bad at vetting the operator right now.

There are also additional costs of operating and maintaining an LLC, like separate bank accounts, annual report filings, tax filings, etc.2.

Most operators post on multiple STR OTAshttps://www.biggerpockets.com/airbnb-calculatorGood luck

You also have to build in holding costs, investor capital, operating costs etc.

Keep in mind that owning rental properties, even if it is a house hack, means operating a business and thus should be treated as one, respectively.

Would that lower our tax liability from other income we receive or no because this is purely RE and not an operating business?

We operate dozens of STR's around Austin.

If you are a STR operator how do you deal with remitting and paying tax?

And all those skills you going to have to learn and master in UK to get a property under control, operate it, market it, monetize, operate etc., ALL 100% translates to anything and everything you will do when back in US. 

It only takes a few minutes to comply, and this way, you don’t have to worry about any decision they finalize on later.