I77 is a very scenic route but has some pretty steep grades crossing the Blue Ridge. I'm not very familiar with routes around Buffalo, but I like 15 thru Pa down to I81, then down to I66 near Strasburg, Va to Rt17 to I95. You avoid the long steep inclines of I77. I also don't like I81 from North of Harrisburg to Scranton. Lots of steep and curving ups and downs. Don't have any experience towing between Buffalo and the Elmira area.
Order is illusion. Chaos is reality. But right or wrong I'm still the captain. ๐