I absolutely agree with daisy. It is not being judgey, it is to save your house and your sanity for years to come. And it is not just about housetraining (now I understand why you may be worried) but early socialization also. Early stuff is just SOOOOO important, talk to rescuers - a lot of their dogs are given up because people cannot cope with bad behavior due to poor socialization.
Just think about it in terms of getting a 3-4 year old toddler (not unreasonable a comparison age-wise). Unless he has proper supervision, it will be so very difficult to teach him social etiquette/boundaries/socialize with other people and dogs and also keep the house in order (unless you really plan to lock him up and this is just bad, bad, bad).
Up until the puppy is about 14 weeks you can take him practically anywhere without it having any fear. After the age of 14 weeks they rapidly develop fear as a defence mechanism, so it will become much harder to socialize. It is a very well established that puppies should experience EVERYTHING they will come in contact with (people, environments, noises, transport, etc) by the age of 14 weeks in order to have the best start in life.
Please follow daisy's link from Tue 26-Apr-11 07:33:46. You will pick up a lot of useful stuff on these posts and you may see that you have to work around your schedule/ involve your parents/friends or neighbours to take shifts to visit your puppy or take it out when a bit older, but basically to give your pup the best opportunity to grow into a confident and well behaved dog.