The idea is to get as much as possible using the equity and pay the rest with our income, with the goal of long term wealth building for financial freedom.

I would advise to use a short term hard money loan, acquire it quickly, rehab it, and refinance into a long term DSCR loan. 

We've looked into this some, and I see that there are ITIN mortgages, but their terms are quite unattractive.Is there another solution?

To my mind, strictly enforcing lease terms is closer to a last resort than a first option.

(Short term rentals, mid term rentals, long term rentals, student rentals, sober housing, single family rentals)How much capital do I have to invest?

It's pretty simple.

Longer-term money like that means you can be more patient without constantly hearing the tick-tick-tick of interest racking up on the pull from the HELOC.

I’m Mike Reis a commercial LO for a credit union in SC with favorable terms for investment RE

The goal is to get it updated enough to use as  a mid term rental for travel nurses, so it will be empty some of the year for us to visit.

@Joey Gedgaud we take over a lot of properties where owner complains previous PMC:1) Poor communication, taking many days, sometimes weeks, to get a response.2) Maintenance work being done without notice or approval request.3) Surprises for extra fees, services not covered , etc. because the management contract was "simple & short" instead of thorough.