http://addons.us.to/addon/archaeologistFor showing target health, you might want MobHealth2 to use with archaeologist.
http://wow.curseforge.com/addons/project-633/I'm not sure which one ive used. Its one of them. When you have a working version,
there will be an option inside archaeologist called "Use MobHealth".
You have to configure everything in game by typing /arch