When I did it in 2019 the signage was poor and the guidebook had a lot of out of date references to B&Bs that were closed, etc. Maybe the new book is better. Google earth is very helpful. I thought the Western half was nicer than the Eastern half. Starkers (sp?) has a church right on the trail that lets cyclists camp, and even shower. Macedon has a big campground with water and portapotties. You might think of ending at Albany airport to get a oneway car rental back to Buffalo. That's what I did from Buff to Alb.
Check CGOAB for accounts of people's trips.
Have fun.