Why do you have two warrior squads out of raiders, and two in? Do you not have enough raiders?
Also, I think not taking ravagers...taking none at all is a mistake. >< You need some anti-
MEQ, and nothing does it better than triple plasma cannons (IE, disintegrators).
If I were to build a 1,000 point list (I have two minutes before a conference call) it would start with 3x ravagers, then pack as many dark lances in there as I could get. The end.