I think Section 8 is a great opportunity for a specialist or a niche investor. However, I would recommend not limiting yourself to this one type of property. If you want high occupancy rates and qualified paying tenants, most quality rentals in metropolitan Atlanta in C class or better areas with tenants placed by a professional property manager should enjoy low vacancy rates and high likelihood of on time rental payments.
Section 8 does have plenty of red tape, paperwork, inspections, etc. that come along with it, but it's not insurmountable for an investor that specializes in this type of property. Some of the market rents for Section 8 can be fairly generous, also. Tenants are also likely to be less picky about the location (busy roads, commercial adjacent, etc.), amenities, finish level, and other criteria, as long as the property meets Section 8 standards and the landlord accepts the program. However, in my experience, most property managers and private landlords in Atlanta won't accept housing vouchers because they feel they can get quality tenants with reliable rents without the hassle of those programs.
Due to the niche and specialized nature of Section 8 rentals, I believe there is an opportunity to acquire occupied Section 8 rental properties at a substantial discount to retail market rates or non-Section 8 occupied properties. The risk of acquiring a tenant-occupied property is also mitigated because at least a portion of the rents are guaranteed by the federal government and the property meets minimum inspection standards (on paper at least).
As an investor, you will just need to ask yourself what is it about this strategy that attracts you to it and if it's worth the hassle to specialize. However, the Atlanta metro area has a robust renter pool, a diversified economy, and no shortage of opportunities in the conventional rental arena.
I'm always happy to hop on a call, if you'd like to discuss in more detail. I've been working in the rental property space for many years and I'm always happy to share my experience.