Hey Libran,
The MBS Comp 95 is a good mountainboard for downhill and freestyle.
Gear that I think are a MUST, helmet, knee pads, elbow pads. Gear that I also recommend are gloves and some butt protection.
I hate landing on my tailbone, so I have some hillbilly padded shorts that work good.
If you plan on riding on narrow trails or down steep steep slopes, a brake is sometimes nice to have. If you decide to not get one, you can still stop by powersliding. I don't have a brake, and I get by fine.
I'm not from NY, but if I happen to hear of any good places to ride out there, I'll let you know.
good luck!