Well, I know its too late for my suggestion to help on this trip as its finished, but if you go back to NY again here's a suggestion
Contact Rick Savage @ Savage Classical Guitar in Bay Shore NY, basically in Long Island.
He's one of the most reputable CG dealers on the East Coast and has lots guitars to see and typical classical guitar accessories etc.
He would also be able to tell you about the local CG scene, and where any open-play's are occurring.
2018 Salvador Castillo Concert Classical
2001 Vicente Carrillo 1a Rio
1998 German Rubio Vazquez Estudio
2015 Cordoba Solista
La Bella & D'Addario Strings