1-2-3 breathe! Do not stress out and worry too much over it. Whatever happens or does not happen with Delta cannot be controlled by you, so no need to fret. I flew USAIR down once and WHILE I was in FL was the date of the strike. No worries, all ended up okay and I got home JUST fine.
You have plenty of time to figure things out. A lot of the big airlines have had issues, but one as big as Delta, like USAIR, usually finds a loophole to stay in the air.