I did the math and could cover the mortgage solo if needed.

You would only pay taxes on all passive investments in a traditional SDIRA at distribution, unless you have a mortgage, then the portion of the income derived because of the mortgage will be subject to UDFI (unrelated debt finance income) which will trigger UBIT (unrelated business income tax). 

Where these numbers are found, there is a very high rate of rent actually being paid.We have over a dozen Fortune 500 companies just in Metro Detroit with huge Healthcare, Auto, and mortgage industry National footprints.

It is increasingly more difficult to pay of even one mortgage when you are cashflow negative, let alone multiple.

Adjustable rate mortgage, 10% down.

Seller financing, subject-to deals (taking over the seller’s mortgage), or lease options can create terms that work for both parties.

The mortgage and property taxes use up most of the income from rent.Don't focus on the number of rentals, focus on the quality of the rental. 

I would be happy to go over some of the requirements for getting a mortgage in the US as an international investor. 

With current interest rates, and they are at least 1% higher with potentially additional points for non owner occupied property, it is hard to find properties that will allow for positive cash flow after paying the mortgage, if you are looking for money for the down payment from a private lender, those are normally at higher than market and I am not sure it would be possible to pay it off.... please remember you need to take into account that you may not have a tenant for a certain amount of time, a tenant may stop paying rent, or you will have a big ticket item to fix, so I would wait if I were you and save to have enough for the down payment and closing costs and perhaps some money set aside for repairs. you also want to make sure that you have your own emergency fund outside of the money needed for the investment property because life happens ....

The coaching for Jonathan's The Land Method is NOT substantially cheaper.