I don't know any responsible breeder who would sell you a puppy if you are at work all day. As to house training, this is achieved by letting the puppy out frequently and staying out with it until it has been, each time it wakes up from sleeping, after each feed (at least four meals a day at first) and after playing (which they do frequently between sleeping). Apart from housetraining, being there to bond with the puppy and teach it how you want it to behave is vital if you are to have a healthy, well adjusted dog that you can take anywhere and be proud of, rather than come on here and ask for help with problems six or twelve months down the line. Why not volunteer to dog walk for a local rescue at weekends, if you want to spend time walking dogs.
Welsh, did Callie's 'squits' clear up ok? Rather surprised you don't feed any treats, they are a great way of training. They don't need to be unhealthy, you can get all sorts of doggy treats that she will enjoy and want to 'earn'.