I'm vaguely terrified of the thought of a NY ban, too. I can't believe the state that houses NYC has such ridiculous laws(including the stupid liquor laws. Bars here are open til 4am, why are they so strict on when stores can be open, etc?).
I've been vaping for a little over a month and have started experimenting. It's not terribly difficult. I am generally artistic and take to making most things quite well, but I can sense that mixing e-juice like some of the pros takes dedication I don't have. I greatly admire, for example, Geoff from Tasty Vapor's juices. That guy is a mad genius when it comes to flavor.
If you're satisfied with some of the more generic companies that don't really blend their own, then you're likely to be more than happy blending your own. Just be very careful and, of course, wear gloves. I personally wouldn't touch pure nicotine, but that's just me. Many suppliers offer it pre-suspended in PG and/or VG, and that'll make things a lot easier for you.
I'd just suggest not to add water. It baffles me that some juice makers do this, it yields inferior product and just seems like a bacteria playground to me.
Have fun! Do post about your experience after you've been playing around
