These are the dream questions for some of us, as the early rifles have a special draw. The hard part is realizing that outside of a very few spots there are so few early rifles that can be documented to a place, that identifying a style that says "from here" is impossible. Reading, Lancaster and Christians Spring are most prominent among the few places with multiple well-attributed originals made before or during the Revolutionary War.
If I was going to make an early rifle for that area, I would look to Wallace Gusler's articles on "black rifles" out of the valley of Virginia, his and other articles on the "Woodsrunner" rifle, the "tulip rifle", the early Haymaker rifle, and from Rifles in Colonial America, rifles numbered 118, 123, 124, 142, and the brass barreled rifle, 103. Check those out, find one that is particularly appealing, and build based on an original. All of those are appealing to me. If you need more info on any of these let me know as I have a collection of articles.