@O'brian R.
"...keeping the security deposit is standard in TN" is news to me as well. I think the Tennessee Landlord Tenant Act, which applies in Shelby County, would beg to differ.
Plus, going into a rental agreement knowing that the security deposit is going to be kept regardless of the move out condition is really starting off on the wrong foot. What would your feelings be towards the landlord in such a situation? How would you return the property when you move out? What incentive do you have to return the property in decent condition?
Now, if our tenants have caused damage, yes we are going to use their security deposit to repair it upon move out. However, we regularly give over 90% of our security deposits back. So no, keeping security deposits is not, nor should it be, standard.
Think about this as well. One day you will likely want to sell your investment. In an area dominated by other investors who will you be selling to? Will they pay retail prices or will they be looking for a deal? When you are ready to sell, how much will you have to spend to rehab the property? After a few years of being a rental, it will need updating and rehab. How much will that updating/rehab eat up the cashflow you have made over the years?
I'm not saying not to invest in real estate here or anywhere else. But in real estate you make your money when you buy. So you have to be sure to buy it right.