That's a good point he brings up about the temp. I never try to paint if it's below 70. I know it's possible but the ball game changes from what I'm used to and only adds another element of difficulty. I also don't paint when it is really humid.
There's no problem in re-shooting it, just scuff it down for smoothness and shoot it again. This time you won't be trying so hard to get paint coverage, you already have that. You're shooting the last coat, just enough paint to make it look good.
Dan