I tried this on JBoss-6.0.0.Final and found
Unrecognized option: -XVerify:none
Please use CMSClassUnloadingEnabled in place of CMSPermGenSweepingEnabled in the future
I cleaned up the double quotes, double MaxPermSize and used
'-Xms128m -Xmx512m -XX:MaxPermSize=256m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -XX:+UseConcMarkSweepGC -XX:+CMSClassUnloadingEnabled -Xrs'
From a clean start it takes 16 seconds to start on my mac.