Probably PO and local but I have not decided yet.
I have never thru hiked anything and have only done a week or so at a time without a break or a move via auto, re-stock etc which is no big deal. I did take a 3mo trip hitching around the US in the 70's with some hiking mixed in, but thats a different type of traveling.
That was a long time ago though and I was super skinny back then. 165#. Working out with weights for 25 years and I have put on a lot of muscle.
Dont know on distance but probably the typical 15 mile days, some 10 if I get distracted and its not too far to the next resupply, some 20 if I feel like pushing it and the knees are doing good.
Not even really sure how far I will make it, older now so knees, and other aches etc but I want to give it a try. I have not been on the AT in about 20 years regular hiking.
I did take a three week car photography trip along the AT about 3 years ago with a 4x5 camera, 6x9 MF and 35mm SLR digital. Luggung that stuff around was interesting but got some nice images.
Been other places for a week or so here and there, colo, Oregon, Washington, New Mexico, Yellowstone.
I think hitting a town every 3-5 days to eat would be the plan, probably will try to hit a hotel every week or so. As long as I can eat a steak and potato every week or two, hamburger or a huge breakfast every now and then I think I can make it. Of course there is the rest of the time on the trail dreaming about the next steak dinner.
I figure I will lose weight, but thats okay. Probably should count on 2# of food per day, 10# for 5 days which is still not that bad.
My old way of starting a hike, or continuing after a resupply was to pack in a ton of food for the first night and eat it all and load up.
I have even packed in a T-Bone steak and potatoes at times. Not in bear country though. Then when going back into town eat a lot and pack in a ton more food for the first night, like maybe 4-5# for the 1st night.
I am probably going to need a bigger pack than I originally planned for.
My old Kelty internal alpine pack might take the trip. Its been around the entire US in the 70's and 80's a few times and its overdue for another trip. Rebuilding a lighter internal frame for it so we will see. Other than that I might have to buy an Osprey to handle more weight comfortably. With a 3# pack I can do it with 5 days of food, 2 qts of h20 somewhere between 26-30# which is still not that bad, but 20 would be better. 20# total less 10# food less 4# h20 would mean having a base weight of like 6# which wont happen unless I ditch a lot of gear and get a Cuben pack, and I am not sure a cuben pack would last an entire thru hike.