driven from BA to NQN 6 times in the past year. DO NOT take 232 to Cheiforo, this is a VERY VERY bad dirt road that will eat the shit out of your car. I only took this road once (google maps got me) and saw a couple families in cars white knuckling it at 20kmph. I have a hilux with offorad tires and it was still very rough.
It is best to cross the desert using RT 20 and come down to NQN from the north on 151, it's still not a great road but at least it's paved and has traffic on it incase you need help. I also took the Bahia Blanca route once (RT 22 from General Roca to Neuquen is under construction so this is a severe delay) but find the RT20 route to be quicker for me so I always elect to go that way.
When making this trip I wouldn't be worried about peso pinching at the YPF stations. Get gas before and after you cross the desert and you will be fine. Plus you'll avoid waiting in the horrendous lines you find at most YPFs.
You can make it from BA to NQN in 11 hours if you don't stop often. Don't know where you are from but if you're from the states you're probably more accustomed to driving long distances so it's totally doable to make it one go. I would try hardest to drive in the daytime and keep an eye out for rain that will flood the highway and make driving very dangerous, proper highway drainage is not a thing outside BA.
If you want meat in Neuquen eat at Boliche de Alberto for dinner. Restauraunts here are pretty simple so it's limited to mainly the based Arg diet of meat, pasta, pizza, empanadas, and hamburgers. But it will be the same story at any of the surrounding towns.
Bariloche really only has one way to get to it from NQN. So not really any options there. You can make it in 4.5-5 hours. The internet usually sucks there but if you're in the city cneter it might be ok.