I ran my VX in the cold weather over last fall/winter with no problems. I would recommend grabbing some of the new Militia Lube that came out a couple / few months ago as it is very slippery and should perform nicely in cold weather.
You could up your dwell by a couple and if you get any FSDO you can up your ABS a little to compensate.
Again though I didn't experience any issues playing in cold weather with my VX up here in NH where you're from
