This is my first winter in TV and I would never go back to the northeast during the winter months. It would have to be a very special occasion to do so, and I would be looking to get back to TV ASAP!!!
Fortunately, my son is in Florida, so moving north would not be option for me.
It has been 15 degrees higher than the normal temps, in Florida, this year, Shorts, t-shirt and sandals are the only way to live for me.
I think you may have starting, way too early, worrying, what will happen in the long term future. I would wait to see what my options would be, if only a few years, from the day you have to decide, whether you move closer to your children. For all you know, they may have moved to Florida by then.
"Man plans, GOD laughs" is a good saying, for something that is out of our control. It's too far away, to start worrying about it now. IMHO
I would wait, to make a decision with all the facts at the time, it needs to be made, and say, "this is the best I can do, and let it go".
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"It doesn't cost "nuttin", to be nice". 
MOM
I just want to do the right thing! Uncle Joe, (my hero).