3 man group question

[Neroth]

Hello,

Some friends and I played back around launch until the cat people showed up. I found this site reading the wiki for nostalgia. Anyway on to my question. I've got 2 friends that want to all level together as a 3 man squad and then group up with others at higher level. Not sure if we would raid much because of the time commitment. What classes would you suggest for the best 3 man squad to level without a too much downtime?

Thanks!