Last year you wouldn't have had to worry about being cold--it was actually hot! This year, who knows! With the way our winter has been going, it may still be snowing then!
If you can't make Paducah, the AQS does one in Knoxville in mid-July. It's a little smaller, but quite nice to attend. I like to go to both of them. From the one in Knoxville, we went on to Gatlinburg last summer and spent several days.