Thanks for the info. on the tires and rims...that's probably the way I'm going...it's great to have someone who understands the area I ride in...

The frameset is on its way.

I went with the 16" due to my conversation with the mechanic at the LBS that rides another Surly frameset...I'm a roadie and I have a hybrid that I ride on the C&O whose geometry is very comfortable...and we found the 16" to be a better match with what I currently feel comfortable with...

The 18" seems just a little big.

Enjoy the Cumberland ride!