Keep in mind ga beeman that doing late season splits in our area has issues that the northern folks don't. Small hive beetles are at their peak in late summer. Removing bees from your strong hives may leave them weakened enough for the beetles to get a better foothold. Also, the nucs you start must be very strong....right from the start, to keep the shb at bay. Proceed with caution.
I agree. Things are different in Georgia. Using the plan I've adopted for wintering nucs in Vermont, might not be appropriate for Georgia..at least not entirely.
One problem we face here in the North is finding a source of early queens/bees. Wintering nucs provides both. If timed right, queens can be wintered in small cavities...conserving bee and equipment resources. Think wintering queens not wintering bees/colonies.
I'm not nuking strong colonies in my operation. I only make nucs out of non-productive colonies...healthy but non-productive. This is in July when the main honey flow is about half done. Rather than spending time and money...management and requeening...to bring these colonies up for next year, I use the bee/brood resources in a wiser management scheme. Strong colonies are managed for honey production.
That all said, I think you could take advantage of the idea. Your timing would be different. You might make the nucs earlier in the season, expand them into full sized hive bodies, and winter as singles. They'd be ready now with the best queens raised last summer.
When nuking one of these non-producers, you start each nuc with a minimum of brood and bees...not a maximum as you would with spring splits. Here, I use 1 1/2 frames of brood and just enough bees to take care of it and accept a laying queen. I imagind it would be the same for you in Georgia. Just start early before it gets too hot, the flow ends, and the SHB get to be too much of a problem. SHB is something we don't have problems with and the warning is appropriate. You would have to tell me how to procede in dealing with them.
Remember, when you get these queens through the winter...whatever that meant to you...they're tested queens. You can observe their performance in a smaller hive with less equipment resources involved. You can use the best in your production colonies. The rest can be broken up into the next year's nucs