I went last year on my way to Jerseyfest. Its just as you would expect a classic hobby shop to be. His collection of finished figures is worth the trip by themselves. If I had the means, I could drop a pretty penny there. Your haul looks great!
If you're interested in the French-and-Indian War, too, it's worth it to drive about 11 miles further down the river to Sunbury, and visit the Ft. Augusta museum. It's maintained by the Northumberland County Historical Society. There are displays of period items, as well as a model of the fort. When it was built, it served as a strong point to deter French incursions from the west. There's also a re-enactor group based there, the 3rd Batallion, Pennsylvania Regiment of Foot. Here is the URL to their page about the museum: http://augustaregt.org/MuseumProject.htm