What are competitive property managers in the space charging.

Assuming you're getting an owner occupied rate, I would say that's very competitive.

The market is even more competitive now.

Second, you have stated that this property has been on the MLS for some time which means it is clearly overpriced, the fact that the agent is willing to work with you knowing you are a wholesaler is just out of their own desire to get a commission. if they were really doing their job, they would have made adjustments to the listing (with seller's permission) as no property in this highly competitive sellers market should sit for very long. 

If there happen to be a "tenant" that had a very loud sound system that played heavy death metal 24 hours a day would that be breaking any laws? 

Everybody and their mom wants a small MF in Atlanta so competition is fierce.

Choosing the right market to invest is a critical piece of the equation as some market are cash flow heavy with little/no growth and some are appreciation heavy with negative cash flow. 

If the deal makes sense, the money will come, but you make your money when you buy.The market here is very competitive for a number of reasons, so you have to be prepared for that.

I live in Boston, a very competitive housing market, and it is a standard for real estate agencies to charge a 1 month's brokerage fee when you sign a lease for an apartment through them.

Lenders don't want, and don't allow, any "competition" for a potential lien on a property.