I wouldn’t try it as a single person. I got mine while working full time and commuting an hour away for grad school 3 days a week for full days and was feeling pretty guilty until I got him into doggy daycare. But doggy daycare doesn’t always work great around an atypical schedule. Dog walkers can be spendy.
You also have to factor in things like vet bills and unexpected trips to the vet etc. who’s going to take your dog if there’s an urgent issue and you’re supposed to be in the OR? I had one really healthy dog who rarely needed the vet and another that developed some chronic stuff young and needed frequent trips to the vet. When she got lymphoma it was hell but I had a very flexible schedule at that point and could come and go as needed.
Even if the dog doesn’t have accidents or shred stuff while the owner is away for really long hours, doesn’t mean the dog is doing well or thriving.
Finally, depending on the city, finding rentals that take your dogs without breaking the bank can be a real challenge. Cities and rentals can have breed and weight restrictions. I owned a house when I got mine, but wound up moving a few years later.
My first town was moderately difficult to find a place that accepted medium to large breeds. Everyone wanted extra deposit and pet rent. Next town, not so bad, ultimately wound up in employee apartments that were fine with it. Current city (166,000 population), only found two places that would accept dogs over 50 lbs. One had horrible reviews. I’m living in the other and it’s ok. there’s a mouse and bug problem but I renewed my lease because I didn’t have other options. So dogs greatly limit flexibility on housing options in some places.
tldr if single, I’d wait