An idea for you:
Fly into Reno from Atlanta and take the ESTA bus to Mammoth (leaves Reno Airport at 1:30pm on the days I have checked, ymmv)
Stay 24-48 hours in Mammoth to acclimate (8000') or up at the Mammoth Mountain Inn which is at 9000'
Bus to Lone Pine with a shuttle up to Horseshoe Meadows to camp for the night at 10,000'
Begin hiking the following day north via Cottonwood Pass or New Army Pass.
This gives you 2-3 nights of acclimating before you head to your first camp.
One Permit gives you the whole JMT with Half Dome included (this will not be the case for 2019 I've heard. In the future Half Dome will not automatically be part of your permit like it is now if you want it)
You will need to start with full food canisters. In my experience I don't have a huge appetite my first few days at altitude. So going heavier on soups and lots of snacks for the first few days might be a good thing. Everybody is different tho.
I would hike out to Onion Valley/ Indy to resupply if you have the time to add a 24-36 hour side trip into your itinerary. Those that have stayed the at Mt Williamson Motel count the experience as one of their JMT high points.
http://mtwilliamsonmotel.com/
Check out Sam's video on the whole NOBO walk up permit experience.
https://www.youtube.com/watch?v=rQOyAGX52wg
Disclaimer: I have not hiked the JMT. While recovering from Lyme Disease this fall I spent 6 weeks planning a 2019 JMT trip to keep me sane.