Don't know about Ga. Here I have some native hollies that are growing in very deep shade that are doing well.

Hemlock. You can get 7 gallon and larger at Buck Jones Nursery off Hwy 140 as you head south towards Roswell.

White pine is pretty tolerant of shade. Not total shade tho. If they get a half-day of good sun, they'll do well.

How about a mix of magnolia grandiflora, ilex opaca or 'Savannah Holly' which is an evergreen hybrid of i. opaca and i. cassine, eastern red cedar, and whatever pines do well in your area?
Sherry