When I went to Brickworld, I had to pack away everything. I suggest taking a train so that things don't role around, and carry it on the train car. In an airplane, your stuff WILL get destroyed, no matter how well it is packed.
I probably will never travel on a train again. My last experience was horrible. To make things short, my backpack (I was going to Philmont Boy Scout Ranch [it was also smaller then a suitcase]) was forced to be checked in, and it received quite a beating. Also, because of how the train rode, my shampoo bottle burst open. I know that has nothing to do with the train, but this next idea does.
On the train, it was delayed about 1:30 minutes, right from the start. After I got on the train, I sat for 22 hours to get from Albequeque (sp) to LA. After arriving in LA, I waited another 2 hours in Union Station, and then traveled on another train for 5 hours. That last five hours was delayed by 4:30 hours, because our train ran over a man and his dog. Yes, we killed a man, and investigators, police, etc. all came. I arrived home at midnight, when I was originally planned to arrive at 4:30.
But, that shouldn't damper my spirits. It's just that the train takes a long time, and you really can't carry as much stuff as you'd think, and it's close enough to plane ticket that it is worth 100 extra dollars to get there 30 hours quicker.