Me and some friends are planning on doing a 3 player cmode online because we can't really find a dependable 4th player. We need advice as to what classes we should use for just 3 people. We are not doing a time attack, we just want to play it through at a decent pace.

The catch is, my friend is absolutely stuck on playing a HUmar... but the 2 other slots are free for ideas. Is it possible for us to just power our way through with just 1 HUmar and 2 HUcasts or are we really going to need a force?