I only live about 3 hours from where the convention is held every August (Pigeon Forge, TN)...I ALWAYS attend the WInter Carnival of Magic (held in the same place) every March...it's not really a kidshow convention, but of all the conventions I've ever been to, it has to be my favorite. You might like to check into it also.
I just finished up with SEAM held in Atlanta this past weekend. It was a great convention. They won't be having it next year due to the IBM convention being held in Nashville.
Sounds like your a busy man for conventions. Personally, I would love to attend some type of magic lecture, and I'm going to work on getting to one next summer. TN is a LONG way away from where I live, so most likely that may be out of the picture, but I don't know.