Yes, those things were listed by someone named Mike Hern who has been deleted.He is the pro on the subject, but that subject is no longer welcome on BP apparently.

Last 6 months what has sold, for how much, how long did it take, an interactive map showing all comps and subject house. 

Here's an overview as well as my understanding of the tax implications.I'll start with the US Tax implications:As a foreign investor, you’ll be subject to U.S. federal income tax on the income generated by your U.S. real estate investments.

They apply, but you are just subject to gift tax at that point, which does not actually result in a tax bill for you, but a reduction in your total giftable allowance which is ~13M dollars. 

I youtubed everything and watch several other videos on the same subject.

All if this is subject to negotiation.

Alternatively, I could liquidate stocks to pay off the property but I'd be subject to capital gain taxes and obviously not leveraging.

Most DSCR lenders I'm aware of will let you use 80% of the income from AirDNA towards qualifying for the STR purchase as long as there is a 60% minimum occupancy rate on the subject property.  

Afternoon, I have a seller that’s open to subject to, but back out because their LO said they wouldn’t receive financing for their second house.

I wasn’t picking on the way you said it.Would it shock you that there are attorneys out there now who specialize in going after private lenders, claiming their intended business-purpose loans are really for a consumer purpose and subject to all legal penalties, damages, and consequences?