C.O.
For the amount of money they will charge you to "as luggage" I would take it to FEDEX and ship it UPS Ground.
That's what I did when we went to my parents house a few years ago. My boys had their carry on which had one change of clothes and their toys/books. All of their clothes had been shipped via FEDEX Ground and got there the day we did - it was $17.50 to ship. Instead of $50.
I'm not sure if the box would fall apart - but I would definitely tape it up REALLY good!!
HAVE FUN!!