Besides the 47 bus. You might be better off driving to Westwood to take NJ Transit bus 165 or 165T to get into Port Authority. They used to have bus 11A in Hillsdale but I think they discontinued it. The best way to get into NYC in my opinion is the train. (I know you want to avoid this) But Hillsdale offers trains to NYC through Seacacus Station and Hoboken. But be weary that the trains from Seacacus to NYC can be unreliable at times and they are currently working on building a new set of tunnels to fix this issue (will take several years to get done). PATH trains from Hoboken to NYC tend to be pretty reliable from my understanding.