For upsate NY i suggest flying to my mates airport. It is called Duflo's or NY10
It is in Lewis County in a town called New Bremen. He has AVGAS on tap, he is an instructor and certified engineer. On top of that he is a crop duster/sprayer and entomologist.
The runways are asphalt. If you want PPR call on 315 376 2155 and ask for Jeff or Renee.
Yes there are plenty of trees upstate, there are also plenty of fields. Last BFR I done during the PFL I was where was I going to dump her. I said the huge great intersate below us. Instructor said fine and go for it (obviously dont actualy land)