John, Ft. Stewart is pretty big but very interesting country. You will see hog sign everywhere, the trick is to find where they are NOW. This will take some serious walking. Two ways to narrow your search are (1) ask the rangers, they know, and (2) check out the "hog damage areas" on the Ft. Stewart web site, where there have maps of specific areas. If you are driving that far, you might allow at least 3 or 4 hunting days, more would be better.
Do a search for "Fort Stewart" and you will find several threads on the place with some good information and answers to several of your questions, especially about the campsite. Be prepared for cold nights and warm days. If it gets real warm the snakes and gators might be out, but not too active. You do have to check each day to see which areas are open, then sign in/out. There is a whole network of dirt roads - a good idea is to drive in the area that you signed in, until you find smoking hot pig sign and follow the sign. Take a compass and/or GPS - it is pretty flat but there are numerous firebreaks to follow as well.
One one hand, you guys might have fun exploring a new area all on your own. On the other hand, hooking up with Anointed Archer's group might provide good fellowship and more chances at hogs.
Either way, good luck. I'm headed there at the end of January on the way to the TBG hog hunt (another option for you guys to consider), you can PM me for a scouting report.