Private lenders are certainly an option but a fund structure would be much more efficient and scalable. 

Use extended closing periods or additional earnest to buy more time for your old property to sell if you need.The last option is what's called a reverse exchange.

Oh, AND I get to add some new additional handcuffs to the mix.Zero sense, it makes absolutely zero sense. 

There is only a limited provision to make additional fixed-amount payments once a year. 

In southern CA, even garage conversion ADU additions are typically costing more than the value added.  

When it comes to housing, the FHA rules apply in addition to those of your state/city.

The importance of lowering expenses and increasing efficiency to maximize property income.

Close to a cool little town, close to an area attraction, etc....Also do a search here and see how to screen guests, in addition to what the hosting sites do.... like no last minute bookings, no short stays....

My biggest concern is managing additional units and tenants.

Or in this case the additional tax on investment real estate in SC.