There is NO MetroNorth train in upstate NY. MetroNorth is a commuter train servicing New York City and the immediate suburbs.
If you are looking at property in upstate NY, you will need a car as public transportation is very limited. New York State is huge and either you live & work in upstate NY or you live & work in downstate NY. You cannot work in one part of the state & live in a town 5 hrs. Away.
On the other hand, towns along the St. Lawrence River (Morristown) do swell in the summer with tourists and maybe you are considering a home there for the summer season?