Consider making two mind-shifts:
First start building a 'gear list' of the ALL the items that are going along, along with their weights. (Excel is a good tools for this.) By looking at what others are doing, and not just the sub-10 lists, you will see what is possible (sub-13 on gear and clothing is no problem especially in GA in September!), and you will know what gear you need to look for. Between now and June it Will show up on this forum. If you are ready to buy, it's yours, cheap. If you have to ponder, it will be gone.
Second, take a close look at how you are going to do food. Using the FreezerBag/CozyCooking method you can eat well on 1.5 pounds a day, and if your resupplies are at typical AT intervals you shouldn't be carrying more than 7 pounds of food.
That will make for a 20# skin-out weight. I think many here would suggest that sub-20 is very doable for a 5 day hike.
So it's not just gear, but the right gear, and the right meals, and close attention to the details.
Good Luck. Getting to September will be a fun journey in itself.