Adults Come to Harkenwold

After running Harkenwold off and on for two years with a group of teens who grew bored, I invited some adults aged 40+ to step back into HS geekdom and start a DnD 4e campaign.  A Librarian, a Marine, a  Writer and an IT guy walk into a room...  I end up with an acrobatic Rogue, an archer Rogue who acts like a fighter, a Wizard and Cleric...