Easiest route...

Coming from 85N:

Take the NDruid Hills Road exit (Exit 89a) MAKE SURE YOU TAKE THE NORTH EXIT
The road will take you on a curve
Right at the light.
You should see an exxon on the left and Krystals on the right
Take a right at the second light.
Go all the way down about 1.5 miles and make a right onto Briarwood (the light where youll see an autozone on the right after the light)
Go all the way down to the end of the road and youll come to an intersection, itll be on the left. You cant miss it. REI will be on the right.