Law School Discussion

so I've been through a semester of law school and figure I have time to take care of a puppy.  i don't want a cat.  my dilemma is what to do about summer associate positions, and later on, permanent employment.  i guess i could look into finding a professional dog walker, but i don't really like the concept of someone going into my home every day to walk the dog, plus it seems very inefficient to be spending ~$16 per visit for such a service.  furthermore, finding a furnished apartment in a big city that allows large breed dogs seems like it could be a daunting task.

i think i'd be ok with nighttime interruptions and the need to go home between classes for a couple months to walk it and give it attention.  to me, it's worth it.  i've wanted a dog for quite a while (probably 6 years) and i don't think there will be a better time to train a puppy than in law school, when my scheduled work is divided into 2-3 hour segments.  i'm just afraid that having a large dog is going to create some obstacles that I'm not sure how I'll get around (housing, long work days, loneliness potentially leading to misbehavior).  it seems like a lot of people suggest it's easier if you have an SO or roommate.  the irony is that the dog would be a companion replacement for an SO or roommate which i don't have, as it probably is for a lot of people.  i don't want to adopt a dog from rescue as i am interested in getting a particular type of purebred dog.

i guess my issue is if i don't get a dog now, there won't be a better time for it in the future as far as I can see, and i'm extremely reluctant to forego one of the things i think would actually bring me happiness.  so, for anyone out there who thinks they can answer -- is this plausible?  ludicrous?  deadly to my future success?  please advise.