Sadly I am in a similar situation, but in Northern KY. I have a hive that started as a nuc purchased this spring (from Kelley, I think from down in Alabama or something). They are crazy aggressive, and many, many die trying to sting me through my gloves every single time I work them. They have gotten in the habit of buzzing our faces if we get within 100 feet of the hive in the 24 hours or so after we open them up. Last weekend, about an hour after we worked them, a bee flew directly up to my 4-year-old and stung him immediately. No warning, no head butting, and no swatting from my son. This is my third year as a beekeeper and we've never dealt with bees like this. Others have seemed a little agitated and head butted us if we opened them up, etc, but we have never had them continue to act that way after we close them up and walk away. I am considering requeening or at least allowing them to requeen and the new queen breed with local stock. The question is, when to do it? We are in nectar flow now.