To setup weblogic plugin for new domain, I have written a small python based wlst script, its worth using –
import os, sys
wlusername=raw_input('Enter weblogic user name ')
wlpassword=raw_input('Enter weblogic password ')
port=7001
wlhostname=raw_input('Enter weblogic hostname ')
connect(wlusername,wlpassword,'t3://'+str(wlhostname)+':'+str(port))
edit()
startEdit()
cd('/Servers/AdminServer')
cmo.setWeblogicPluginEnabled(true)
save()
activate()