Great choice on getting a Corgi, they're the best!  I hope our Corgis can meet one day since we live in the same area.  Any questions or concerns about your corgi please feel free to ask, I got Cori when he was 10 weeks old and drove to Delaware to get him, he's 5.5 yrs old now, best decision I've made.  I did a lot of research prior to getting him so am more than willing to pass on the knowledge =D

Have you already got a crate, pads, and kong ready?

that is hilarious! I had the same items too when I was preparing Cori's arrival as well!  I also had a play pen too, basically 2 feet tall fence that made a 5x5 feet square so he had his own space when we left him home alone.

What food is the breeder feeding?

My 2 cents, as I did a lot of research on food, is to get Wellness or Blue Buffalo.  Iams and science Diet are low/mediocre foods.  Wellness and Blue Buffalo are expensive foods compared to the others but you pay for what you get, a healthy dog with a great coat.

True story, my friend in NJ has a Corgi, was feeding him Pedigree and Science Diet or whatever he was able to buy when he ran out of food.  His coat was rough and had a dull coloring to it.  But after we met and I told him to switch to Wellness, after a few months, his Corgi's fur started looking and feeling like my Corgi, soft and bright.