Never decide on a strategy ahead of time. 

Atlanta MSA is great and growing, but Multi-Family supply coming on line there both now and through next year is significant, wouldn't this be a better/cheaper deal 1 year from now?

Go on to a month to month at XXX/month (new rate x 1.2 or 1.25 depend on how you feel about it)3.

@Scott LorenceThe advantages to renting to college students are that they generally leave after a few years so you can do repairs or updates, you can raise rents on a regular schedule, they will pay a premium to be near campus, and if you get engineering students they tend to fix the small stuff on their own.

Perform a cost seg study on JUST the ADU.

Whether or not you would benefit from a cost segregation study depends on multiple factors. 

There are multiple potential strategies it's just really going to depend on your personal situation. 

My wife's siblings have built 2 house on this land as there own houses they are living in The property is a total of 15 acre and each siblings got a portion of the property.

Hi Chris, there are several options you could consider, but it would all be based on your risk tolerance. 

You have to be ready to make 3-6 months of payments on the mortgage yourself after they stop while you try to foreclose/evict them.