After reading your post, I picked up on one very important statement that you made. You said you only had 1-2 hours to be able to exercise your future pet. This leads me to believe that the circumstances in which you will be bringing a dog into are far from ideal.
The breeds that you mention are "working" dogs. They need far more exercise and attention than you have to give right now. All dogs need fulfillment. You cannot fulfill the needs of these breeds or really any other.
Choosing a pet should be for life. People often get pets for themselves as opposed to getting pets to increase the quality of life in the animal that they are choosing.
You are working with several factors that are not conducive to responsible dog ownership. I do not mean to be harsh but at this time it seems that despite your best intentions and your love of dogs, you would not be the best dog daddy.
Apartment living is a nightmare when you have a small dog, let alone a large breed. At this time you are not able to invest the time in a future companion to allow this pet to thrive. I am not aware of any single breed of dog that will thrive (ever) in an environment that allows so little human interaction. The breed doesn't exist!
Without proper training, exercise and socialization with humans and other dogs you would have a recipe for disaster. I strongly encourage you to think before you take this leap. I am certain there will be a time when you would be in a better position to make a place in your life for a canine companion.
Dogs do not deserve to be bought and stashed away just because we want one. They deserve to have a forever home, playtime, human touch, gentle training, exercise and socialization.
