I wouldn't haul them from South Texas to Georgia. I would hire a professional hauler, if you can cover the dollars. The man with the fish wants to sell them to people who will make them pets, like they have been for him. I spoke for 5,000 pounds of them for one of my clients.
If you want to haul them, you best learn about how to do it. It ain't a job for the faint of heart or those who don't know how to do it.
And, I want to emphasize the biggest caveat. THESE FISH WILL EAT YOUR FISH. There are no fish in any private lake that can compete with these creatures.