To close this out: I ended up buying a back up flight on JetBlue.

JFK was a bit of a disaster last night due to weather and air traffic controls issues. My flight from Paris landed two hours late. The "good" thing is, my Delta flight scheduled for an 8:30 departure left four (!) hours late so easily made that. And, they kept the Sky Club open so just hung out at the bar and watched football. I think I was the only one who wasn't upset about the delay.

The JetBlue flight scheduled for a 10:55 pm departure left an hour late and landed at 2 a.m. I canceled it just before boarding my Delta flight and got a bit of a balance left. It did make for a much more relaxed flight knowing I had it as back up so no regrets.