Thanks for the replies. I live in northwest Queens, so the north shore of L.I. as far as Port Washington, City Island in the Bronx, Westchester, and southern Connecticut, are all relatively convenient. I've been sailing for 30+ years on boats 30'-45', have done thousands of miles bluewater, but never on my own boat, and never really in charge, so I want some time on the boat to get comfortable enough to make days-long trips. I figure I could keep her in the Great South Bay and do some day sailing there, but it's shallow, and space is limited, so I think I'd quickly outgrow that area and want to take her around to the sound. That would most likely mean a slip or mooring at a yacht club with a launch for a couple of months, then move to another at a more permanent home in the sound. Getting a hold of two places to keep her in one season seems like a lot right now, so eliminating the time in the bay seems pragmatic.
Right now, she's out of the water, and the mast is up. The idea would be to get her in the water to do a sea trial, probably in March. Then possibly keep her in the water in the bay or immediately haul her over to the sound. But if the hauling is more than a few hundred bucks, maybe it's not worth it.
As for what I'm looking for in a marina, what kind of amenities, slip, mooring, etc., I figure a mooring would be cheapest, and I don't see myself taking advantage of much of what a higher-end yacht club would offer, other than a launch service to the mooring.