Quote from @Andrew Steffens: I think going into an STR purchase with reasonable expectations of cashflow in this current market and rate environment is admirable. 

A potential challenge with a HELOCs is they are based on the current appraised value of your home, not the improved value, so you would need to make sure you have enough accessible equity.

Outcome currently is a rented basement for $1,350 a month + $130 in utilities while I live in the upstairs unit.

Foreign citizen currently living in Miami.Any recommendations in general?

@Marcus Stokes, house flipping is a full-time business operation, even with current market conditions.

I would love to hear from current franchise owners, be it HomeVestors, Red Barn, New Again Homes, Flip Cheap Homes, or any other flipping/wholesaling franchises out there.

The baseball season lasts 6-7 months, and I am given free housing during this time, wherever I am currently assigned to play.

And addressing my item #1 comment, almost always, when a "distressed" homeowner is approached, they initially are grateful to have the loan brought current, but before long they forget the circumstances they were in and you become the bad guy that stole their house.

Yes it is posible to get a DSCR loan as a foreign national with no credit score, employment or current real estate ownership.

Ask to speak with some of their current owners and current/former tenants.