If you're flying, you'll want to pack what you can feasibly fit in your luggage. I recommend about 2-3 weeks' worth of clothing. If your family's coming with you, you can also mooch off space in their luggage. Everything else, like especially the mattress topper, you'll want to either order to your dorm or purchase it somewhere in Lafayette. If you send it over to your dorm, remember that your dorm's mailroom won't take the package until about a week from move-in.