Are you planning to drive from Atlanta to the South Rim of Grand Canyon, spend 3 days there and drive back in 10 days?! That is a bit over 1800 miles. Assuming you will be driving or pulling an RV at an average speed of 50 mph, that is 36 hours of driving. So four 9 hour days of driving. 60 mph is generally considered to be the safe speed for RV travel, especially for towing. And that means about 50 mph on average including gas and other stops. Also especially for a new RVer, RV driving is a lot more stressful than driving a car.
Even if you drive at 70 that would give you a 60 mph average speed and a 30 hour drive.
You won't have time for any stops along the way, an exhausting drive out, three days at GCNP and the long drive back. Not much fun in my book. We've done drives like that before, 4 1/2 days from N. Florida to Yosemite, but we didn't turn right around and go back.
Also you should consider the weather at GCNP in late November, snow on the ground is very possible. Looking at the history, last year saw a high in the mid 30's and a low around 0 at that date.
My advice, in the words of the song:
"Turn back, Oh Man.
Forswear thy foolish ways."
Pick somewhere warmer and closer.
Arctic Fox 25Y Travel Trailer
2018 RAM 2500 6.7L 4WD shortbed
Straightline dual cam hitch
400W Solar with Victron controller
Superbumper