Not a bad choice, I lived in that area from 1987-2014. Gwinnett County had (probably still does) and extended archery in January so you could bowhunt from the middle of September through to January 31st with a massive season limit on Whitetails.
If you fish there is Lake Lanier which is full of big Spotted Bass and Stripers, as well as that weird good eating fish that only the transplanted Yankees know how to catch, Walleye. If you fly fish the tailwater fishery below the dam is stocked Rainbow water but the Brown trout in the Chattahoochee are wild. There is a group of fly fishers that specialize in catching extremely large Browns swinging big tandem streamers on 7 & 8 weight rods, they don't talk about it much but if you are interested you can find them. Several Wildlife Management Areas within 2-3 hours drive have good Hog populations as well or you can make a drive South and be all in it. When you get there put in for a gator tag every year and rack up your points.