Peco has a good reputation and I have window shopped there but not bought a camper. They sell Flagstaff and we like the Rockwood color schemes better so we continue to look for a Rockwood aframe.
We live in North Georgia and have been to Black Rock Mountain SP several times. It is a steep drive up the mountain to the campground so be prepared for that. Lovely area with great views but the camping spaces are a bit close together. Hope you have a great time.
While up here might I suggest visiting The Dillard House for a good country breakfast or supper? A bit pricey, but lots of good food served family style. Also you might want to visit Tallulah Gorge State Park. Beautiful place with good hiking and a very deep gorge worth seeing. Might want to consider a night or two at its campground as well, one of our favorites. A side trip to Helen, GA and Highlands, NC is worth your time as well.