I know I'm a few years late, but I'm right across the border in western MA. Quince do great here! I've been cloning with cuttings and planting hedge rows. They flower pretty early and the fruits can be lost to a late frost.
I'm having good luck with mulberry, pear, blueberry, Honey Berry, sun choke, woody herbs, hosta, daylillies, apples, horseradish, rhubarb, kale, mustard, strawberry.
I'm currently building trellis for kiwiberry (Geneva 3 variety) and hope for large harvests in the coming years.
I eventually plan to plant some tree nuts and would love to get some seabuckthorn.
Ps: I've been planting potatoes every year and leaving them in the ground. This spring is the first time, I've had one regrow... So perennial potatoes too?