For me, I use a fire warrior and a water healer as mains.

I recommend using an Earth alt(add all points to CON) to walk-remote in Kelan cave for ores and money, because Earth has got high hp and def to last over-night. So Earth is good for remoting.

For wind... IN MY OPINION, I dont like wind. Because if you are a fighter, you need CON, WIS, and ATK. If you are a mage/healer, you need CON, WIS, and INT. And since you only get 3 points per lvl increase, you dont have spare point to add to AGI when high lvl...

This is why I chose Fire and water as my two mains... (though I did not choose Earth as remoter, because I thought very high AGI means high chance of dodging attacks, but it turns out to be CON... -.-lll )