well hermits and snails are like 1-2 bucks by me so i'd get like 8 of each?
if you can get premium live rock i suggest doing so, it's more expensive, but worth it IMO.
a cleaner shrimp (any kind really) and maybe the emerald/sally crab.
if you get t5 you could maybe keep SPS and nems/clams such, which are generally sonsidered the hardestb to care for. depending on the lighting you ultimately get...
xenia, hammer coral, torch coral, bubble coral, zooanthids, finger coral, cauliflower, devils hand, leather, cabbage, brains (open and closed, and differnt species of each) tongue, plate, acropora, millipora, montipora, stylopora, maxima clams, derasa, squamosa, crocea..
there's a GIANT ASS list... go to a trusted LFS and see what they can order...