Personally, I'd go to Plattsburg, then west out of there towards Malone, Ogdensburg, Watertown area. From there, take either rte 3 or 11 south to 104 west. Bypasses 90 and runs parallel to 81. 104 pretty much runs south or Lake Ontario, but east to west all the way to the falls.
2017 F350 DRW XLT, CC, 4x4, 6.7
2018 Big Country 3560 SS
"The best part of RVing and Snowmobiling is spending time with family and friends"
"Catin' in the Winter"