Finn hasn't a leg to stand on in the New York or bust situation! Rachel's talent, drive and Broadway dreams are a huge part of who she is. Everyone knows this. They are integral to her personality and character. Is Rachel self centered? Yes. But Finn is dim witted, immature, stubborn and lacks all drive and ambition. I see absolutely no reason why he shouldn't take his mediocre self to New York and try to find himself a future in the big city since he hasn't come up with any realistic future for himself elsewhere that Rachel should need to consider.