the things that my roomies and I discovered to be very useful :
A floor (or table) fan for the bedroom. It helps cool things down in the summer and it blocks out some noise when you sleep.
A mattress pad... you WILL want it. Although after some shifts I was so tired that I could have slept on a jagged bed of sharp nails and I would have slept like a baby, haha!
Things from home... pictures, small decorations... it helps the homesickness.
A computer, laptop preferably
a wireless router (but WAIT till you get to FL b/c someone else might have packed one

)
stuff to wait to buy in FL are things like cheap lamps, cheap book shelfs or end tables for TVs, etc...
gosh i had this HUGE list back in 09 when I was a CP and I've lost it since...
and if you think it will be an issue, then masking tape and a permanent marker to mark your food. It wasn't a problem for my apartment, but i know some people who had BIG issues with other roomies stealing their food.