Mandi and Bluemountain,
Thank you for your answers. To clarify, our relocation allowance is four air tickets and additional $4k for non-carrying baggages. As my kids are bilingual, Korean and English, we need lots of Korean books. I don't think we can buy non-english books there. Absolutely, we will give away most of things for charity except indispensable books, clothing, and minimal toys. More advice will be more than welcome. Thanks.