Good for you! I started at 70 and I've been enjoying chicken keeping and chicken company thoroughly.
First of all, congrats on beginning by coming here to get info. This is a spot full of really good and reliable info. Second, I'm with aart, get your coop plans together and get it sited and built before you even order anything. Then it's time to think about populating it.
I agree with BigBlueHen too, that, at this time of year, more mature birds will be better. It will soon be getting cold in NYS and you want birds that are fully feathered out and have a nice supply of body fat to get them through the cold months to come. But why not continue getting information, surveying what problems people typically have, what their start-up questions are, etc. and order chicks in the Spring? More will be available so you'll have a lot of choice about what varieties you want. And you'll have more information under your belt and start out feeling more confident.