I've got a queen bed, dresser, small desk, bookcase, and 2 floor-to-ceiling shelf units in my 11x12 bedroom/craft room/office. I also use underbed storage containers and over-the-door multi-hooks. It works for me, but it might feel claustrophobic to some. My scrapbooks are in the living room on a bookcase though, so maybe your roommate will let you display your finished artwork.
Try to get rid of stuff you're not going to use and label everything else before moving!! You could also join in on a fun group challenge here on SCS to make 100 cards/projects in 100 days from just your stash without buying anything, except adhesive.
http:////www.splitcoaststampers.com/...554358-10.html
Hope that helps a little!