Charlotte, NC looks like it would be alright also. Lake Norman close and they have the facilities. I would love to see it moved to april, it would open up a lot more lakes to prime fishing.
The thing is, to host such a big event and require it to be indoors limits where you can go really bad. It would be ideal to have it at a warmer time and atleast you could do weigh-ins at a amphitheater or something thats covered but outdoors. Then cities with only one indoor facility could hold the expo in that and put the weigh in outdoors. In a perfect place to me would be a huge hillside on the side of the lake. Bring some lawn chairs and catch them right when they come off the water.