Bobby, you're a bit south of me... if you decide to reverse, the time to do it is anytime between now and April 10, depending on:
a) Weather, and
b) where is the cluster and brood nest?
If the bees are expanding the brood nest, and the queen and brood is in your top box, and you're running two deeps for the brood nest, it's time to reverse. Now, what is in the bottom box? Brood? Honey? Pollen? Empty? If empty many think it should be on top soon, to help reduce swarming impulse. Last Thursday when we hit 60 here in Poplar Bluff, sunny day, I reversed 5 of my colonies. Brood and queen was upstairs, downstairs empty. I reversed, and slapped on feeders today, to assure they wouldn't starve if we had many days of rainy weather.
But, as suggested, you need to decide if this is going to be part of your management program.
I wish you well!
Steven