NR, great route and ride report.
When you showed me this route a couple weeks ago I thought about tweaking a BBC ride called Susquehanna Splendor by taking it further and over to york furnace. If you're up to try a 300K with me later this year, something like this could be a good one:
http://www.bikely.com/maps/bike-path/258832
I'll try to incorporate more of the roads from your route in it.