Yea, I wouldn't mess with the E-water pump. I have a 15" Black magic fan that pushes 2850 CFM...and it is plenty enough for the 3.0. You have no need for a dual fan set up, that's plain out to much. Electric fans will go up to $100 wherever you go with all the accessories it needs. Mine was $130, and well worth it. You might go to a Junkyard and get a fan, but what about all the connections for it and hardware? I think my fan was the best choice for my truck...it explains (vaguly but duable) how to wire everything up and you can put your hand in front of the grille and feel the air being sucked in!
If I were you, I'd break down and get a Black magic or a clone of it...I didn't need anything other than what was included...so far it hasn't failed me yet.