@Samuel MartinTry get another primary/second home if possible.If not, find a great deal and get a partner to expand your borrowing capacity.The way I scaled with no money was hustling to find the best deals and then get a partner/investor to jump in with me. 

Not sure why you would refinance a lower interest primary loan into a higher interest DCSR loan.

I'd also modify the lease such that he is the primary resident and if he goes, then she does as well. 

We have it in several of our homes (including our primary) and absolutely love it. 

Location should be your primary concern if you want good tenants and good appreciation.

I rented out my primary home instead of selling it.

Detroit is my primary market, so if you're looking to work with some one who truly know what they are doing.

I did a cash out refi on my primary to buy 3 houses with 20% down.

Down payment can be higher than primary, but the good thing is that you won't need that much income to qualify because lenders can you 75% of the market rents for the units of the property.

The primary goal is to protect the owner’s investment, maintain property value, and ensure a steady cash flow.Why Property Management MattersMaximizing Income: One of the key goals of property management is to ensure that the property is generating the highest possible return on investment (ROI).